介词短语
中文翻译：立刻
同义词：
['immediately', 'instantly例句：1. At the instant she saw him', 'she knew it was him.（她一看到他，就知道是他。）']
例句：
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1. At the instant she saw him, she knew it was him.
她一看到他，就知道是他。
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2. The police arrived at the instant the alarm went off.
警报一响，警察就到了。
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3.She decided to leave at the instant her boss called her back.
她决定在老板叫她回来的一刹那离开。