Chúng ta tham gia buổi dã ngoại rồi ngắm hoa.

Chúng ta means we in the inclusive sense: it includes the speaker and the listener.

So if I say Chúng ta tham gia..., I mean you and I (and possibly others) take part...

By contrast, chúng tôi also means we, but it is exclusive: it includes the speaker and some other people, but not the listener.

• Chúng ta = we, including you
• Chúng tôi = we, not including you

That is a very important distinction in Vietnamese.

Tham gia is a very common verb meaning to participate in, to join, or to take part in.

It is written as two separate syllables, but together they function as one verb expression:

• tham gia một hoạt động = participate in an activity
• tham gia buổi dã ngoại = join / take part in the picnic or outing

In this sentence, it does not mean simply arrive at the outing; it means actively being part of it.

Buổi is a noun/classifier-like word used for an occasion, session, or part of the day/event. In this sentence, buổi dã ngoại means something like:

• the outing
• the picnic
• the excursion event

So:

• dã ngoại = outing / picnic / excursion
• buổi dã ngoại = the outing event / the picnic occasion

Vietnamese often uses words like buổi, cuộc, trận, bài, etc. to package an event or activity into a countable or more concrete unit.

Dã ngoại usually refers to an outing, excursion, or picnic-like outdoor trip.

Depending on context, it can be translated as:

• picnic
• outing
• field trip
• excursion

It is not always exactly the same as the English word picnic, because dã ngoại can be broader and may simply emphasize going outdoors for leisure or group activity.

So in your sentence, buổi dã ngoại could be understood as the picnic or the outing, depending on the context.

Here, rồi links two actions and shows sequence, like:

• and then
• then
• after that

So:

• tham gia buổi dã ngoại rồi ngắm hoa = take part in the outing, then admire flowers

In other contexts, rồi can also mean already, but here its main job is to connect the two actions in order.

Và simply means and. It connects things without strongly emphasizing order.

Rồi often suggests that one action happens after another.

So the difference is roughly:

• tham gia buổi dã ngoại và ngắm hoa = participate in the outing and admire flowers
• tham gia buổi dã ngoại rồi ngắm hoa = participate in the outing and then admire flowers

In your sentence, rồi makes the sequence clearer.

Vietnamese often omits repeated subjects when they are already clear from context.

So:

• Chúng ta tham gia buổi dã ngoại rồi ngắm hoa

naturally means:

• We join the outing and then we admire flowers

The second we is understood, so Vietnamese does not need to repeat chúng ta.

If you did repeat it, it would still be understandable, but usually less natural unless you want emphasis.

Ngắm means more than just casually look at. It usually means look at attentively, admire, or enjoy the sight of.

So:

• nhìn hoa = look at flowers
• ngắm hoa = admire flowers / enjoy looking at flowers

Using ngắm gives a more appreciative, leisurely feeling.

Vietnamese often does not mark tense the way English does. The time is usually understood from context, time words, or particles.

This sentence by itself could refer to different times depending on context:

• now / present plan
• past event
• future intention

For example:

• Hôm qua, chúng ta tham gia buổi dã ngoại rồi ngắm hoa. = Yesterday, we joined the outing and then admired flowers.

• Ngày mai, chúng ta tham gia buổi dã ngoại rồi ngắm hoa. = Tomorrow, we’ll join the outing and then admire flowers.

So without a time expression, the sentence is more neutral.

Not necessarily in the same way as English already.

In Vietnamese, rồi has several uses. Here, it mainly shows sequence between actions. It does suggest movement from one action to the next, but its main meaning is:

• first do A, then do B

Compare:

• Tôi ăn rồi. = I already ate / I’m done eating.

• Tôi ăn rồi đi ngủ. = I eat and then go to sleep.

Your sentence is closer to the second pattern.

Vietnamese nouns often do not have a special plural ending like English -s.

So hoa can mean:

• flower
• flowers

The exact meaning depends on context.

In ngắm hoa, English will usually translate it as admire flowers, because that sounds more natural. But Vietnamese itself does not need to mark plural here.

If the speaker wanted to be more explicit, they could say something like:

• ngắm những bông hoa = admire the flowers / some flowers

But the shorter ngắm hoa is very natural.

Yes. The basic order is very typical:

• Chúng ta = subject
• tham gia = verb
• buổi dã ngoại = object/complement
• rồi = connector showing sequence
• ngắm hoa = second verb phrase

So the structure is basically:

Subject + Verb 1 + Object + rồi + Verb 2 + Object

This is a common pattern in Vietnamese for describing two connected actions.

Yes, depending on the situation, đi ngắm hoa can sound very natural too.

Compare:

• ngắm hoa = admire flowers
• đi ngắm hoa = go admire flowers / go flower-viewing

If the idea is that after the outing, the group physically goes somewhere to see flowers, then đi ngắm hoa may sound more explicit.

But the original sentence is still fine. It simply states the two actions in sequence without emphasizing the movement.

A simple way to break it down is:

• Chúng ta = we (including you)
• tham gia = participate in / join
• buổi dã ngoại = the outing / picnic
• rồi = then
• ngắm hoa = admire flowers

So the sentence is built as:

We + join the outing + then + admire flowers

That is a very normal and useful Vietnamese pattern for linking actions.