副词
中文翻译：立刻
同义词：
['suddenly', 'instantly例句：1. She arrived atthe airport at once after her flight wasdelayed.（她的航班延误后，她立刻到达了机场。）2. Hedecided to leave immediately afterhearing the news.（听到这个消息后，他立刻决定离开。）']
例句：
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1. She arrived atthe airport at once after her flight wasdelayed.
她的航班延误后，她立刻到达了机场。
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2. Hedecided to leave immediately afterhearing the news.
听到这个消息后，他立刻决定离开。
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3. The meetingwas called for at once when the chairmanarrived late.
主席迟到后，会议立刻被召集。