The bicycles are kept under cover , eg in a shelter , shed, etc.

Under cover of the dark, the dog was stolen.

在黑夜的掩护下, 狗被偷走了.

They escaped under cover of darkness.

他们在夜幕的掩护下逃跑了.

The enemy stole away under cover of night.

敌人趁夜黑逃跑.

We travelled under cover of darkness.

我们在夜幕掩护下行进.

The actual emergence usually takes place under cover of darkness.

实际上紧急情况通常都在黑暗的掩护下发生.

They move under cover of darkness.

他们在黑暗的掩护下行进。

The soldiers crept forward under cover of darkness.

士兵在夜色的掩护下匍匐前进.

Many murders have been committed under cover of patriotism.

许多谋杀是在打着爱国主义的旗帜下干的.

We attacked the enemy under cover of night.

在夜幕的掩护下我们袭击了敌人.

Reinforcements were set across the river under cover of darkness of night.

夜色掩护下,援军过了河.

Because a riot started, he to leave under cover of darkness.

后来,因为那里发生骚动, 保罗不得不连夜离开.

The proposal is under debate.

那个提议还在讨论中.

He closed up when he found he knew practically nothing about the subject under discussion.

当他发现自己对所讨论的问题实际上一无所知时,就不再开口了.

It is still under discussion.

(建议)还在讨论.

The question under discussion is very important.

讨论的问题是很重要的.

The question is still under discussion.

这个问题仍在讨论中.

The question under discussion is significant.

讨论中的问题是重要的.

What he says bears no relation to the the problem under discussion.

他所说的与正在讨论的问题毫无关系.

Please speak to the subject under discussion.

请针对讨论的问题发言.

The introduction of new advanced techniques in the factory is under discussion today.

在工厂采用新的先进技术的问题是今天的议题.