A defensive weapons system; defensive behavior.

防御性的武器系统；

youdao

President Obama could also choose to begin supplying Ukraine with defensive weapons, a power recently granted to him by Congress.

奥巴马也可以选择开始向乌克兰提供防御性武器，这是国会近期授予他的权力。

youdao

To be specific, it may start off an arms race in outer space, and may also extend the arms race from offensive weapons to defensive weapons.

具体而言，一是可能将军备竞赛引入外空，二是可能将军备竞赛从进攻性武器扩大到防御性武器。

youdao

U.S.officials in the Bush administration insisted there was no linkage between offensive and defensive weapons.

VOA: standard.2009.07.15

They might sometime give them their weapons, but not their defensive armor.

城邦有时会派发武器,但不是防具

耶鲁公开课 - 古希腊历史简介课程节选

I also believe that it is entirely legitimate for our discussions to talk not only about offensive-weapons systems, but also defensive-weapons systems,".

VOA: standard.2009.07.15

First of all, unmanned aircraft typically lack defensive weapons with which to protect themselves.

FORBES: The Revolution In Unmanned Aircraft Is Overrated

Russia's hold on us is the Anti-Ballistic Missile (ABM) treaty, which essentially prohibits building defensive weapons.

CENTERFORSECURITYPOLICY: Beware a Clinton Arms Deal

Continued development and deployment of strategic offensive and defensive weapons, particularly naval, ballistic, space and cyber forces.

FORBES: Futenma and Changing U.S., China, and Japan Strategic Visions in Northeast Asia