Because they are under protection.

因为它们是受保护的呀。

youdao

Michael also knew that it can take awhile to arrange new identities for people under protection, so the sheriff would have to spend a long time cooped up in a hotel far away from home.

Michael还知道为了保护证人，可能会花较长的时间来安排新的身份，所以那位警长就得长期呆在酒店里，远离家人。

youdao

He made the allegation under the protection of parliamentary privilege.

他是在议员特权的保护下说出那种指责的话的。

《牛津词典》

In the trial, two same-sex couples argue that the state ban violates equal protection rights under the United States Constitution.

VOA: special.2010.02.06

It is a trading post and it's there by permission of and under the protection of the King of Egypt, and that's because he wants--it's handy for him to have a merchant settlement of Greeks for him to do business with.

这里是个通商驿站,而且获得了,埃及法老的许可和庇护,因为他认为,与希腊商人通商交易,为他提供了一些便利

耶鲁公开课 - 古希腊历史简介课程节选

They're actually... Our Environmental Protection Agency which is under the executive branch

他们事实上……我们的环境保护署是属于行政部门的，

全球变暖与国力 - SpeakingMax英语口语达人

Tatiana Villegas highlighted the critical importance of in situ protection as the first option that should be implemented under protection programmes.

UNESCO: Underwater Cultural Heritage

The officer, named as a target by Mr. Dorner, is under protection with her family, according to an officer in her unit.

WSJ: Ex-Officer Sought in California Killings

As a result, the company is now under protection from its creditors, to whom it has to present a debt-restructuring proposal on June 8th.

ECONOMIST: Asian Telecoms