Learn Romanian: Domnul o salută pe clienta sa. - The gentleman greets his client.

o is a short pronoun meaning 'her'. In Romanian, when you use pe to point out a specific human object (like clienta sa), you must also double it with a short pronoun before the verb. It literally reads as 'The gentleman her greets pe his client.'

Why do we need pe before clienta sa?

Because the client is a specific human being receiving the action of the verb. Romanian uses the marker pe in front of specific people (like names, titles, or someone's specific client) when they are the direct object of a sentence.

Doesn't sa mean 'her'? Why is it translated as 'his' client?

sa can mean 'his', 'her', or 'its'. In Romanian, the possessive word changes to match the gender of the person or thing being owned, not the owner. Since clienta (female client) is a feminine noun, we must use the feminine word sa, even though the gentleman is a man.

Why is the word for client spelled clienta instead of clientă?

The base word for a female client is clientă. To say 'the client', the final -ă changes to -a, making it clienta. In Romanian, when you follow a noun with a possessive word like sa, the noun must have this definite article (the 'the' ending) attached to it. Literally, it translates to 'the client his'.