动词
中文翻译：待命
同义词：
['stand', 'be ready for', 'stand by']
例句：
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1.The policeman stood by the door while the firefighters worked on the fire.
消防员在扑灭火灾时，警察站在门口。
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2. She stood by her decision and refused to back down.
她坚持自己的决定，不肯退缩。
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3. The company is standing by its promise of a new product launch next month.
公司承诺下个月推出新产品，现在仍在履行承诺。