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You need to protect revenue, but you also need to control operating expense.
您需要保护收入，更需要控制运行开支。
youdao
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I have been successful, but also at the expense of something.
我得到成功时，也牺牲了某些东西。
youdao
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I have been successful, but also at the expense of something.
我得到成功时，也牺牲了某些东西。
youdao