The police have so far failed to track down the attacker.

警方至今未能追捕到攻击者。

《牛津词典》

The attacker may have been waiting around for an opportunity to strike.

袭击者可能一直在等待着一个下手的机会。

《柯林斯英汉双解大词典》

The attacker then tried to throttle her with wire.

那名袭击者然后试图用电线勒死她。

《柯林斯英汉双解大词典》

A hypnotist attempts to get the boy to a mental state where he can discuss what he saw so that police can learn more about the attacker.

VOA: special.2011.07.13

So his payoff, the attacker's payoff, is how many battalions does he get to bring into your country?

入侵者的收益,是他攻入你国家时还剩余多少兵力

耶鲁公开课 - 博弈论课程节选

But if the attacker was to attack through the hard pass, again not surprisingly, you do better if you defend the hard pass than the easy pass.

但如果入侵者选择崎岖之途,仍然是毫无疑问,选择防御崎岖之途要比平坦之途好

耶鲁公开课 - 博弈论课程节选

Both women were strangers to the attacker and were on their way to work.

BBC: Sally Hodkin murder case: Witness recalls knife attack

First Donovan's shot was brilliantly saved by M'bolhi but when the ball rebounded to the attacker, he quickly squared it to Dempsey, who turned it into the net, only to see his celebrations thwarted by the linesman's flag.

BBC: USA 1-0 Algeria

If they report the crime, the police often refuse to file a report or try to get the victim and attacker to reach a settlement.

NPR: Indian Panel Pushes New Laws After Fatal Gang Rape