There is no button that you click to activate it. It will automatically effect an enemy unit if you attack it at short range (You will have to manually click on that unit for the EMP to activate).

没有按钮需要游戏玩家你点击，它会在三脚短距离攻击敌人单位时自动起作用（游戏玩家你必须手动点击单位以便激活EMP）。

youdao

If you don't like it, fair enough, but that's hardly a justification to attack the whole thing.

如果你不喜欢它，可以，但把它说得一无是处就没什么道理了。

《柯林斯英汉双解大词典》

Perhaps you've some doubts about the attack. In that case it may interest you to know that Miss Woods witnessed it.

或许你对本次袭击有些怀疑。要是那样的话，你可能会有兴趣了解伍兹小姐目睹了一切。

《柯林斯英汉双解大词典》

Also, shows you something about the challenge of it, because we are susceptible to attack from lots of different kinds of microorganisms.

同样也向你们展示这其中的一些挑战,因为我们也容易受到,各类微生物感染的危害

耶鲁公开课 - 生物医学工程探索课程节选

You sort of attack somebody and they're laughing but if it's--but if somebody's trying to mug you you're not "Ah, this is so funny."

你假装打对方，对方会觉得很好笑,但如果有人抢劫你时,你不会觉得好笑“

耶鲁公开课 - 心理学导论课程节选

Actually, we'd prefer you to attack it directly.

FORBES: Digital Rules

And if you think that way about homelessness, it changes the way you attack the problem.

NPR: A Scientific Approach to Helping the Homeless

He - you guys call it an attack ad.

NPR: Romney Finds No Place Like Home