Translation of "Learns" in Chinese

Timuçin learns Polish.

Timuçin在学波兰语。

- Mistakes are teachers.
- One learns from one's mistakes.
- One learns by one's mistakes.

吃一堑长一智。

One learns grammar from language, not language from grammar.

- 人是从语言里学会语法，而非从语法里学会语言的。
- 人类从语言中学语法，而不是从语法里学语言。