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例句
Is Fran up to speed with the project2 yet3? If not, can you please tell her what's been going4 on since5 the last meeting6?
Brian wasn't very good at using the software7 to begin with, but now he's up to speed. He just needed to practise.
请注意
不要同短语 speed up 搞混,speed up 的意思是提速,加快。
例句
点击收听单词发音
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