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They crossed the road in safety.

他们安全地穿过了马路。

Are these toys safe for children?

这些玩具对小孩安全吗？

They have tightened security along the border.

他们加强了边境的安全工作。

You imperiled the lives of other road users by your driving.

你的驾驶危及了其他路人的生命安全。

The mill was finally shut down by state safety inspectors.

工厂终于遭国家安全检查员关闭了。

Security forces have been put on standby in case of violence.

安全部队已处于待命状态，以防出现暴力事件。

I'm hoping to hear she has arrived safely.

我希望听到她安全到达的消息。

His safe arrival was their only prayer.

他能安全到达是他们唯一的愿望。

Stone walls and pillars can also fall down and are potentially dangerous.

石墙和柱子也可能会倒塌，从而带来安全隐患。

从以上句子中，我们可以知道，安全的基础词是safe,由此可以引申出safety、security以及safely等等，而危险单词只涉及了一个dangerous.

今天就和大家就分享到这，祝愿同学们用辛勤的汗水去收获美好的未来吧！