If [ When ] one loses confidence, he can never expect to do his work well.

一旦失去信心, 就甭想做好工作.

《现代汉英综合大词典》

You cannot expect to do everything asas certain other people do.

你不能期待和其他人一样做同样的事情.

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But how do you expect to do this? Through greater volume of sales? Or new technology?

但你期望如何达到这个目的? 通过增加销量,还是使用新技术?

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You cannot expect to do everything as well as certain other people do.

你不能要求自己什么事情都跟某些人做的一样好.

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