有时候我也快乐，也许一个星期有一次吧。
我一般一个星期有一次。
我有一次发了近一个星期的高烧。
思慧有一次在学校的乘法速算测验中拿了第二，蔡美儿一个星期让她每晚做20道题，拿秒表计时。
When Sophia came in second on a multiplication speed test at school, Chua made her do 20 practice tests every night for a week, clocking her with a stopwatch.
我教的经济学课程是两个单元，所以一个星期有两次课一次辅导。课安排在星期二和星期四。
Ah, well, the Economics I course is a double unit so there are two lectures a week and one tutorial. The lectures are scheduled for Tuesday and Thursday.
他还在他的窗户下对他唱起小夜曲，大概一个星期有那么一次。
He would thus serenade him, perhaps once a week, under his Windows.
与此同时，星期二早些时候，在巴格达北部一个安全检查站发生的一次汽车炸弹袭击事件中，有至少两人丧生，13人受伤。
In the meantime, at least two people were killed and as many as 13 wounded early Tuesday when, for the second time in as many days, a suicide car bomber attacked a security checkpoint in Baghdad.
例如，一次我和几个朋友去了一趟野外漂流，我们花了一个星期的时间航行在一条暗流，晚上露营，自己动手做饭菜，有很多乐趣。
For example, several friends and I once took a trip down a wild river in a raft. We spent a week navigating dangerous currents, camping at night, fixing our own meals and having much fun.
刘慧凝说，“那时压力很大，我们有一次一个星期做了三期节目。”
"There was a lot of pressure. We once made three episodes in a week, " Liu said.
有一次我们听说哈雷彗星下一个星期六将飞回来，我急切地想看到它。
I was eagerly looking forward to having a look at the comet.
一次，姑妈有一个星期没在“山墙庄园”住。一天下午，她出其不意地回来了，带来一大批客人，吩咐贝西准备晚饭。
After being absent from the Gables for a week, my aunt unexpectedly returned one afternoon with a party of guests and instructed Bessie to prepare dinner.
昨天他开始了自己的第一个任务，那就是发信息给西奥·沃尔科特，并且下一个星期他有可能会与这名21岁的小将进行再一次的联系。
He undertook his first task yesterday by sending a text message to Walcott and is likely to get in contact again with the 21-year-old over the course of the next week.
有一次我们听说哈雷彗星下一个星期六将飞回来，我急切地想看到它。
Once we heard that the Halley Comet would fly back the next Saturday and was eager to observe it.
有一次我们听说哈雷彗星下一个星期六将飞回来，我急切地想看到它。
Once we heard that the Halley Comet would fly back the next Saturday and was eager to observe it.
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