英汉双语例句-生物医药大词典

When did this custom start?

中文意思：
愚人节的风俗源于何时呢？

以下为相关句子列表(点击查看，可以看对应的解释）：

	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？
	When did this kind of style go out of fashion?			这种衣服的风格什麽时候褪流行了?
	When did this word come into common use?			这个词是什麽时候用起来的?
	When did we lose the game, the 6-5 extra-inning loss to the powerhouse San Francisco Giants?			从哪时开始我们失掉这场比赛的？在6-5在延长赛中，输给了斗志高昂的旧金山巨人？
	When did yo last see Tom?			你最后一次见他是什么时候？
	When did you become a Permanent Resident?			你什麽时候得到永久居留权(绿卡)？