Redouble your efforts and not slacken off.

要再接再励， 不能松劲。

We've been really busy, but things are starting to slacken off now.

近来我们的确很忙，不过现在情况开始有所缓解了。

Nothing could make us slacken off.

什么也不能让我们松劲。

Trade have slacken off.

不要放松紧握着的手。

You shouldn't slacken off in your study.

你不应该松懈你的研究。

Learning is like pushing a car up. Don't slacken off.

学习如推车登山，一步也不能松动。

Learning is like pushing a cart up. Don't slacken off.

学习如推车登山，一步也不能松动。

Slacken off those ropes there, there's a storm coming!

把那些绳子放松，风暴就要来了。

The demand for coal begins to slacken off in the spring.

煤的需求在春天开始减少。

You can't slacken off because you know someone can take your place.

这让你必须努力训练，你不能松懈，因为有人打算抢走你的位置。

If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

如须避免碰撞或须留有更多时间来估计局面，船舶应当减速或者停止或倒转推进器把船停住。