The Internet was developed during the 1970s by the Department of Defense.

因特网是在20世纪70年代由国防部开发的。

youdao

Now I want to talk about an animal that has a fascinating set of defense mechanisms.

现在我想谈谈一种有着很迷人的防御机制的动物。

youdao

youdao

The ego is the first line of defense between the self and the outside world.

VOA: special.2010.04.13

This is one of the primary strategies that Milton develops, especially in the first two books of Paradise Lost, as a kind of defense against his dependence on classical literature.

这是弥尔顿发展出的早期策略之一，尤其是在《失乐园》的前两册书中,这似乎是在反驳他对古典文学的依赖。

耶鲁公开课 - 弥尔顿课程节选

be that with the Department of Defense or the State Department,

在国防部或者国务院，

肯尼迪学校 - SpeakingMax英语口语达人

The attack came on the last morning of a two-day visit by U.S. Secretary of Defense Robert Gates.

NPR: Romney Fires Landscapers over Immigration

It rebuffed efforts by Secretary of Defense Robert Gates to develop a next-generation nuclear warhead.

FORBES: Nuclear Weapons: How Few Is Too Few?

Fluor is the largest publicly traded engineering company and a big Department of Defense supplier.

FORBES: The Engineers -- Fluor and KBR -- a Saner Play on Natural Gas?