The ship deployed onboard defensive measures.

该驱逐舰启动了舰载防御措施。

The frill might have evolved as a defensive measure against predators.

这些褶边已进化成了一项能够抵御食肉动物的防御措施。

Now, the US, its strategic ally, has offered to help plug that gap with a package of defensive measures.

如今，伊朗的战略盟友美国提供了一系列防御措施，帮助填补这一漏洞。

China said it would take defensive emergency measures against any aircraft that failed to file flight plans before entering the airspace.

中国称将采取防御紧急措施来针对任何进入这片领空前未提交飞行计划的飞机。

And therefore, we're going to take very defensive measures to protect ourselves.

因此，我们将采取非常防御性的措施来保护自己。

So whenever we think about this challenge, we have to recognize that defensive measures are very important but that terrorist adversaries are likely to try to overcome them.

因此，每当我们思考这一挑战时，我们都必须认识到防御措施非常重要，但恐怖分子对手可能会试图克服这些措施。

That means even though your cat is safe and sound sitting in your living room, they're still taking some of the same defensive measures as if they were out in the wild.

这意味着即使你的猫看起来平静地坐在客厅里，它们可能仍然在采取一些和在野外相同的防御措施。

And add to it a failure of defensive measures where there do not seem to have been enough military and police forces near Gaza for contingencies such as what happened in case intelligence fails.

再加上防御措施的失败，加沙附近似乎没有足够的军事和警察部队来应对情报失败等突发事件。

The Forbidden City's sprawling complex of 980 buildings covers an area of over 180 acres and is surrounded by 26-foot tall, 20-foot deep wall as well as a 170 foot wide moat which served as defensive measures throughout history.

紫禁城由980个建筑复杂地组成，占地70多公顷（180英亩），被8米高6米深的城墙保护，并且还设置了一条宽为52米的护城河，起到保护作用。