1．到目前为止，徐静蕾已经主演了很多有名的电影。(up to now；star in)
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答案：Up to now，Xu Jinglei has starred in a great number of famous films.
2．让我们担忧的是这已经是一周内的第三次停电了。(cut off)
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答案：What worries us is that this is the third time the electricity has been cut off this week.
