Learn Romanian: Trenul vine în douăzeci de minute. - The train comes in twenty minutes.

In Romanian, when you count nouns using numbers from 20 onwards, you must insert the preposition de between the number and the noun. If the train were coming in 19 minutes, you would just say nouăsprezece minute, but for 20 it becomes douăzeci de minute.

Why does the number twenty (douăzeci) start with două?

Douăzeci literally translates to "two tens". Două is the feminine form of the number two, and it is used here because the word for ten (zece) acts like a feminine noun. Its plural is zeci, giving us două-zeci. You will see this pattern in other tens like treizeci (thirty).

Why does the sentence use trenul instead of just tren?

Trenul means "the train". In Romanian, the word for "the" (the definite article) attaches to the end of the word rather than sitting in front of it. Because tren is a noun ending in a consonant, we add -ul to the end to get trenul.

Is vine the dictionary form of the verb?

No, the dictionary form (infinitive) is a veni (to come). Vine is the present tense form for "he, she, or it", which perfectly matches our subject, trenul (the train).