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Otherwise, I would have seen Mr. Smith enter the laboratory yesterday evening.
不然，我昨天晚上就会看见史密斯先生走进实验室。
youdao
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They designate Mr. Yang as director of the laboratory .
杨先生，我是全球工程公司的代表。
youdao
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They designate Mr. Yang as director of the laboratory .
杨先生，我是全球工程公司的代表。
youdao