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I had to do it without delay; there was no time to waste.
我必须马上行动，丝毫不能耽搁，因为没时间可以浪费了。
youdao
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You do it without delay. Every parent knows that delayed obedience is really disobedience.
每一位作父母都知道，延迟的顺服就是不顺服。
youdao
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Do it without (any) delay!
马上做，不得延误！
《新英汉大辞典》
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Do it without (any) delay!
马上做，不得延误！
《新英汉大辞典》