sound
When they were talking in the room, the bell sounded.
When I saw the smoke, I tried to sound the alarm.
My father is a person of sound judgment.
The baby is sound asleep now.
sound在教材中的第一个意思为“听起来”,作动词用;第二个意思为“声音”,作名词用。在上面的四个句子中,前两个sound作动词用,意思分别为“(使)发出声音,响”和“鸣警报”;第三个sound作形容词用,意思为“明智的”;第四个sound作副词用,意思为“酣,沉”。
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