This thesis holds that, in actual translating activities, the existence of the unit of translation cannot be denied, and the selection of the unit of translation is ever changing.

本文认为在实际的翻译活动中，翻译单位的存在是无庸质疑的，其选择不是一成不变的。

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But we have to be very careful indeed in translating a per unit gross margin into the effect on the bottom line of the company.

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