Alone, Laurie felt unprotected. 勞裏獨自一人，感到缺乏保護。

The long Russian frontier was highly vulnerable to a German attack. 漫長的俄國邊境很容易遭到德國人的攻擊。

Journalists going to war zones do so at great risk to themselves. 前往戰爭地區的記者們這樣做冒着很大的風險。

an exposed left flank 易受攻擊的左翼

An ancient religious custom is under threat. 古老的宗教習俗受到了威脅。

Workers are entirely at the mercy of dishonest employers. 工人們完全聽任不誠實的僱主的擺布。

an undefended border 不設防的邊界

With the downturn in the market their jobs have become very insecure. 由於市場低迷，他們的工作已變得毫無保障。

In 90% of burglaries, access is through insecure doors and windows. 在90%的入室盜竊案件中，作案者都是通過不牢固的門窗進入室内的。

He knew he was playing with fire by encouraging her attentions.

U.S. troops are doing a terrific job, but they are in harm's way.