But, you know, this undergraduate's very eager to do it, let's let him have a try.
就不值得我再花时间,寻找是否有粒子。
麻省理工公开课 - 化学原理课程节选
Do you know Ji-sung Park? What do you think of him?
你知道朴智星吗?你觉得他怎么样?
知道朴智星吗? - SpeakingMax英语口语达人
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