员;It was thought that the fire alarm had been set off as a prank.
人们认为
警
警器响是个恶作剧。
警器It was thought that the fire alarm had been set off as a prank.
人们认为警警器响是个恶作剧。
They heard the fire alarm.
他们听到了警警。
声明：以上例句、词性
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