Captain Bill Urban, a spokesman for the U.S. Central Command, called the incident an unprovoked attack.

美国中央司令部发言人比尔·厄本上尉称该事件为" 无端袭击。"

President Muhammadu Buhari described the attack on Sheikh Goni Aisami as an unprovoked and cold-blooded murder.

总统穆罕默杜·布哈里称，对谢赫·戈尼·艾萨米的袭击事件是无端和冷血的谋杀。

There have been around 70 to 80 unprovoked shark bites yearly, worldwide, over the past 10 years.

在过去的10年里，全世界每年大约有70到80起鲨鱼无端咬人事件。

The state of Florida led the world last year with 16 unprovoked bites, the shark attack file said.

国际鲨鱼攻击档案称，佛罗里达州去年发生了16起无端咬人事件，位居世界首位。

It was a surprise assault from the air, what President Franklin D. Roosevelt described as an unprovoked and dastardly attack.

这是一次空中突袭，富兰克林·D·罗斯福总统称之为“一次无端的、卑鄙的偷袭”。

Unprovoked displays of aggression cannot be tolerated.

【display】无缘无故的挑衅行为是让人无法忍受的。

Why would ben just come and hit you unprovoked?

本为什么会来无缘无故地打你啊？

Eye-witness accounts told of the unprovoked shooting of civilians.

【account】目击者讲到平民无故被枪击。

Others claimed that Jesse and his fellow guerrillas launched an unprovoked attack on the soldiers.

还有人声称，杰西和他的游击队同伴对士兵们发动了无端攻击。

Israel's unprovoked attack on the flotillas supplying aid to Gaza.

以色列无故袭击加沙救援船队。