英汉双语例句-生物医药大词典

When did they look frustrated? What were they doing?

中文意思：
什么时候他们最沮丧？当时他们正在做什么？

以下为相关句子列表(点击查看，可以看对应的解释）：

	When did the village first get electricity ?			这个村何时通的电?
	When did the war break out?			战争是何时爆发的？
	When did the word “transistor” come into common use?			“电晶体”一词是何时开始被普遍使用的?
	When did the world come into being?			世界是什么时候形成的？
	When did they get married?			他们什么时候结婚？
	When did they look frustrated? What were they doing?			什么时候他们最沮丧？当时他们正在做什么？
	When did they sell hamburgers?			他们什麽时候卖汉堡包？
	When did they start accepting women entrants to the civil service?			他们什麽时候会开始接受公务人员的妇女参加者？
	When did this affair happen?			这件事情什麽时候发生的？
	When did this conversation take place?			会谈什么时候举行？
	When did this custom start?			愚人节的风俗源于何时呢？