The giant water bugs are known to only attack moving prey so it is likely that the 58mm insect captured and killed the young turtle before feeding on it.

我们知道巨型水蝽只攻击移动的猎物，所以这只58毫米长的昆虫可能是先抓住并杀死这只幼小的金线龟后才开始食用它。

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Sea lions can be very territorial, but usually only attack humans when provoked.

海狮虽然很重视自己的领地，但是通常它不会攻击人类，除非人类先去挑衅它。

youdao

Sharks only attack when they are hungry or aggravated.

鲨鱼只是在牠们饥饿或者被惹怒的时候才发动攻击。

youdao

He says that instead of using professionals, al-Qaida is finding people who are ideologically motivated and well-placed to attack, but who receive only rudimentary training.

VOA: standard.2010.05.05

The argument is exactly the same for Nietzsche, only he shifts the ground of attack.

这和尼采的观点完全相同，只是他转移了关注点。

耶鲁公开课 - 文学理论导论课程节选

The attack began not all that long ago, really only as late as the seventeenth century.

攻击并未太慢开始，早在十七世纪就开始了。

耶鲁公开课 - 政治哲学导论课程节选

The first is that this will only attack part of the problem, the expensive one true, but only the doctors part.

FORBES: Bending The Health Care Cost Curve: Fire the Doctors

In other words, Obama was headed into a debate where his premises would not be challenged, his opponent clearly does not have the same level of expertise and could only attack him on peccadilloes.

FORBES: The Disastrous Foreign Policy Non-Debate Where Obama Crushed Romney

Those who will want only to attack will have no place to hide.

FORBES: Algeria Attack Shows The Arab Spring Morphing Into The War On Terror