Questions & Answers about Copiii pleacă din parc acum.
copii = “children” (indefinite plural)
copiii = “the children” (definite plural).
Romanian “definite article” for masculine/feminine nouns in the plural is an enclitic -ii (or -le for some feminine nouns), attached to the noun.
pleacă is the 3rd person plural, present tense of a pleca (“to leave”).
Subject “they” (ei/ele) + plec- → pleacă.
Romanian doesn’t distinguish simple vs. continuous “they leave/they are leaving” in the verb form—both use the same present tense.