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on the dot

adv.准时地

难易程度:

on the dot为短语/超纲词汇
1. A white dot appeared in the sky, as small and innocent-looking as a slip of paper.
    天空中出现了一个白点,就像一张纸一样地小、一样地洁白无辜。

2. She marked the paper with a dot.
    她在纸上画个点儿作记号。

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