We are determined to get the work done well before May Day.

我们决心要在五一节前完成这项使命。

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You should always strive to achieve more, however well you have done before.

不管以前做得多么好，你应该始终争取更大的进步。

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To maximize security, this should be done before every operation that involves a change in credentials, as well as when the user logs out.

为了确保最高的安全性，应该在操作的用户凭证变化之前或在用户注销时执行清除。

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It's always nice to come back to a place you have done well before, and to such a beautiful stadium.

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Of course, new-release naysayers have the same complaint, saying it has all been done before and twice as well.

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Of course Apple has dealt with supply issues before, and done very well, but still, this is a point of note.

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