După drum îmi este sete și beau două pahare cu apă.

Drum literally means road, way, or trip/journey, depending on context. In după drum, it means something like after the journey or after traveling.

This is a very natural Romanian expression. It does not focus on the physical road itself, but on the experience of having traveled. A learner might expect după călătorie, and that is possible too, but după drum sounds very everyday and idiomatic.

Romanian often uses a noun without the article in fixed or very common prepositional expressions. Here după drum means after a trip / after traveling, in a general idiomatic way.

If you said după drumul..., that would usually point to a more specific, identified trip, and it would normally need more context, such as după drumul lung or după drumul până la București.

So in this sentence, după drum is the natural general expression.

Romanian usually expresses thirst with the noun sete plus a fi:

îmi este sete
or more commonly in speech, mi-e sete

Literally, this is closer to to me is thirst than to I am thirsty.

Romanian does have adjectives like setos or setoasă, but for the normal everyday meaning I’m thirsty, mi-e sete is much more natural.

Îmi is the unstressed dative form meaning to me.

So îmi este sete is built like this:

• îmi = to me
• este = is
• sete = thirst

That is why the whole expression literally looks like to me is thirst.

This pattern is very common in Romanian for physical states and feelings, for example:

• îmi este foame = I am hungry
• îmi este somn = I am sleepy
• îmi este frig = I am cold

Yes. Mi-e sete is extremely common and very natural in everyday speech.

All of these are possible:

• îmi este sete — fuller, a bit more careful or formal
• îmi e sete — common
• mi-e sete — very common in speech

They all mean the same thing. A learner will hear mi-e sete very often.

Romanian normally leaves out subject pronouns when they are not needed, because the verb ending already shows the person.

Beau means I drink, so eu is not necessary.

You could say eu beau, but that usually adds emphasis or contrast, for example:

• Eu beau apă, el bea suc.

In the sentence you gave, plain beau is the normal choice.

Beau is the 1st person singular present tense of the verb a bea, meaning to drink.

So:

• eu beau = I drink
• tu bei = you drink
• el/ea bea = he/she drinks
• noi bem = we drink
• voi beți = you drink
• ei/ele beau = they drink

It is a common verb, and its forms are worth memorizing because they are not fully regular in the simplest beginner sense.

Because pahar is a neuter noun in Romanian.

Neuter nouns behave:

• like masculine in the singular
• like feminine in the plural

So you get:

• un pahar = one glass
• două pahare = two glasses

That is why două is correct here. This is a very common Romanian pattern with neuter nouns.

Yes, both cu apă and de apă can be heard, but they are not always felt in exactly the same way.

• pahar cu apă often emphasizes a glass that contains water
• pahar de apă often means a glass of water as a quantity or serving

In many everyday contexts, the difference is small, and both can sound natural. In your sentence, două pahare cu apă means two glasses with water / two glasses of water, and it is perfectly normal Romanian.

Because și simply joins two closely connected parts of the sentence:

• îmi este sete
• beau două pahare cu apă

Romanian usually does not put a comma before și in this kind of straightforward coordination, just as English normally does not put a comma before and in a simple sentence like this.

So the punctuation in the sentence is standard.