副词
中文翻译：偶然地
同义词：
['accidentally', 'incidentally例句：1. He arrived at the airport just in time for his flight.（他刚好在飞机起飞前到达了机场。）']
例句：
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1. He arrived at the airport just in time for his flight.
他刚好在飞机起飞前到达了机场。
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2.I'll be glad to help you with your homework if you need it.
如果你需要，我很乐意帮你做作业。
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3.The weather was so bad that we had to cancel our picnic plans.
天气太糟糕了，我们不得不取消野餐计划。