动词短语
中文翻译：待命
同义词：
['be on duty', 'stand by例句：1. The firefighters stood by the door', "ready to enter at a moment's notice.（消防员站在门口，随时准备进入。）"]
例句：
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1. The firefighters stood by the door, ready to enter at a moment's notice.
消防员站在门口，随时准备进入。
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2.The soldiers stood by their posts, keeping watch over the perimeter.
士兵们坚守岗位，监视着边界。
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3.The police stood by their decision, refusing to back down.
警方坚持他们的决定，拒绝退缩。