Khán giả và cổ động viên cổ vũ rồi vỗ tay.

Khán giả means audience or spectators in a general sense: people watching a performance, event, or show.

Cổ động viên usually means supporters, fans, or cheering supporters, especially in sports.

So in this sentence:

• khán giả = the people watching
• cổ động viên = the people actively supporting a team or side

There can be overlap in real life, but the two words emphasize different roles.

Not necessarily. Vietnamese often uses two related groups together to be a bit more specific or inclusive.

Here, the sentence is saying that both:

• the general audience
• and the more enthusiastic supporters/fans

were doing the actions.

So it is similar to English expressions like the audience and the fans.

Và means and. It joins the two nouns:

• khán giả
• cổ động viên

So:

Khán giả và cổ động viên = The audience and the fans/supporters

It works very much like English and in this sentence.

Vietnamese usually does not require articles like the, a, or some the way English does.

So Khán giả và cổ động viên can mean:

• the audience and the fans
• audience members and supporters
• the spectators and supporters

The exact English choice depends on context, but Vietnamese does not need an article here.

Cổ vũ means to cheer, to encourage, or to root for.

In the context of a crowd, it usually means to cheer on someone, such as a team, player, or performer.

So here:

cổ vũ = cheered / cheered on the team

Even though no object is stated, Vietnamese often leaves it understood from context.

Vỗ tay is a common verb phrase meaning to clap or to applaud.

Literally:

• vỗ = to pat/slap
• tay = hand

So the image is slapping the hands together, which gives the meaning to clap.

It is written as two words, but you should learn it as one fixed expression:

vỗ tay = clap/applaud

Here rồi means something like then, after that, or and then.

It links the two actions in sequence:

• cổ vũ
• rồi vỗ tay

So the meaning is:

• cheered and then clapped
• cheered, then applauded

In this sentence, rồi is not the same as English already. It is mainly showing that one action is followed by another.

Not exactly. Vietnamese does not mark tense the same way English does.

Rồi here mainly shows sequence or completion of one action before another. Because of that, English often translates it with a past meaning, such as:

• cheered and then clapped

But the sentence itself does not have a strict tense ending like English verbs do. The time is often understood from context.

This is very normal in Vietnamese. Once the subject is stated, Vietnamese often lists multiple actions after it.

So:

Khán giả và cổ động viên cổ vũ rồi vỗ tay.

literally follows this structure:

• Subject: Khán giả và cổ động viên
• Verb 1: cổ vũ
• then: rồi
• Verb 2: vỗ tay

English does something similar:

• The audience and the fans cheered and then clapped.

So the structure is quite natural in both languages.

With rồi, the sentence suggests a sequence:

1. they cheered
2. then they clapped

If you wanted to emphasize actions happening together, you would usually choose a different structure.

So the most natural reading here is first cheering, then clapping.

They are related in the sense that both are connected to cheering/supporting, but you should not assume cổ by itself has the same independent meaning in everyday modern Vietnamese.

For learners, the safest approach is:

• learn cổ động viên as a whole word meaning supporter/fan
• learn cổ vũ as a whole expression meaning to cheer/encourage

So yes, they are historically connected, but in practice you should memorize the full expressions rather than trying to translate cổ on its own here.

Yes, that is a very natural translation.

Other good translations include:

• The audience and the supporters cheered and then clapped.
• The spectators and fans cheered, then applauded.

The best English wording depends on context, but cheered, then applauded matches the Vietnamese structure very well.

A rough English-style guide would be:

Khán giả và cổ động viên cổ vũ rồi vỗ tay.
≈ KHAHN zaa vah kaw dohng vee-en kaw voo zoy voh tay

A few notes:

• kh is not just plain k; it is a breathier sound.
• giả in southern speech may sound closer to za or ya, while northern speech is closer to za.
• vũ and vỗ have tones, which matter a lot.
• rồi can sound different depending on region.

Because Vietnamese tones are essential, a rough spelling guide is only a starting point. Listening to native audio is very important.