an act of unprovoked aggression
无端的侵犯行为
Her angry outburst was totally unprovoked.
她暴跳如雷完全是无理取闹。
1.无缘无故的,非因触犯而发生的
1.an unprovoked attack is made on someone who has done nothing wrong
1.Lovers of unprovoked betrayal of deeply hurt Butterfly fragile mind, he made the next swear: Lovers vow not to kill man.
祝英台的无端背叛深深伤害了梁山伯脆弱的心灵，他发下毒誓：不杀祝英台誓不为人。
2.The attack appeared to be unprovoked and it is thought the killer did not know his victim.
此次袭击看似一起无故发生的事件，并且据说凶手并不认识遇害者。
3.At least nine more were killed at funerals on Saturday in what witnesses said was a bout indiscriminate and unprovoked shooting.
在周六的葬礼上，至少有九人遇害，目击者称，伤亡是由一阵无缘无故的任意扫射造成的。
4.As Muslims saw it, a swarm of Frankish savages had rushed in, unprovoked, upon them.
正如穆斯林所看到的，一群法兰克野蛮人闯进来，无缘无故的袭击他们。
5.Conklin said the attack was unprovoked, and he described it as "brutal and lengthy. "
克林说这次攻击毫无理由，他形容这次攻击“残酷而漫长”。
6.The exercise is in response to the unprovoked attack on and sinking of the South Korean frigate Cheonan off the west coast of the peninsula.
该次军事演习是对于北朝鲜无端挑衅与在半岛西海岸击沉韩国护卫舰“天安号”的回应。
7.Epilepsy is diagnosed when a person suffers at least two unprovoked seizures.
若发生至少两次非诱发癫痫发作即可诊断为癫痫。
8.In terms of security, keeping the rules means avoiding actions that, in Mr Art's words, appear "punitive and unprovoked" .
在安全问题上，遵守规则意味着避免采取被阿特称为看起来“带有惩罚性且无缘由”的行为。
9.He added: "This was a senseless and unprovoked murder which has devastated Paul Gilligan's family. "
他补充说：”这是一桩愚蠢且无缘由的谋杀，同时还毁坏了PaulGilligan一家的幸福。“
10.The attack, which the UN has called unprovoked, took place in the Abyei region, which is being claimed by both sides.
联合国称，这次无正当理由的袭击发生在阿卜耶伊地区，南北双方均声称这里是自己的领土。