宝剑不磨要生锈；人不学习要落后。

Not to grind a sword will rust; People don't learn to lag behind.

youdao

宝剑不磨要生锈；人不学习要落后。

Do not wear a sword to rust; people do not learn to lag behind.

youdao

刀不磨要生锈，水不流要发臭。

Do not grind knives to rust, water does not flow to stink.

youdao

快刀不磨黄锈起。

Knives get rusty when not sharpened.

youdao

难道农场的工人也和我们一样懒，连镰刀也不磨利点？

Were farm workers as lazy as us not to grind sickles to be tartness?

youdao

有岑点和不沽净的磁带不能使用，因为其会磨杭峨头，影响拍摄效果。

Moldy and unclean tape can not be used, because it will wear head impact shooting.

youdao

有岑点和不沽净的磁带不能使用，因为其会磨杭峨头，影响拍摄效果。

Moldy and unclean tape can not be used, because it will wear head impact shooting.

youdao