形容词
中文翻译：无反应的
同义词：
['inert', 'inactive', 'passive', 'unresponsive']
例句：
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1. Therobot was reactionless to the sudden noise.
机器人对突然的声音毫无反应。
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2.The room was reactionless after the fire.
火灾过后，房间毫无反应。
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3. The scientist's experiment was reactionless, which surprised everyone.
科学家的实验毫无反应，这让每个人都感到惊讶。