A fortress is easier to protect because it's simpler: it has no windows, few doors, no skylights, or vent systems through which an intruder might sneak.

堡垒的保护更容易因为它构造更简单：它没有窗口、几乎没有几道门，没有天窗或通风系统这些入侵者可能利用的东西。

youdao

It has no air conditioning on it.

它没有空调。

youdao

At this time, it has no wings just legs.

这时，它没有翅膀，只有腿。

youdao

Scientists have long believed that Earth's satellite lacks the ability to hold water near its surface because it has no atmosphere.

VOA: special.2009.09.30

It's like a fourth asset but we're using a special feature of this asset: that it has no risk.

如同第四种资产,我们将利用这个资产的特性：,即无风险特性。

耶鲁公开课 - 金融市场课程节选

One of the most obvious things about a red blood cell is it doesn't have nucleus, it has no nucleus.

红细胞最为明显的不同就是,它是无核的,它没有细胞核

耶鲁公开课 - 生物医学工程探索课程节选

In theory measles could be eradicated - like smallpox it has no animal host.

BBC: Long shadow cast by MMR scare

It has no formal structure, apart from a website, and its meetings have been irregular.

ECONOMIST: Russia and its neighbours

Now that Apple has upgraded its customer base it has no place to go.

FORBES: Apple R.I.P.