铁棒是很粗，只要你每天坚持磨，总有一天能把它磨成针。

Thick as it is, it can be ground into a needle sooner or later, only if you persist every day.

youdao

铁棒是很粗，只要你每天坚持磨，总有一天能把它磨成针。

Thick as it is, it can be ground into a needle sooner or later, only if you persist every day.

youdao