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1·The dogs yapped at his heels.

几只狗跟在他后面汪汪乱叫。《牛津词典》

2·The little dog yapped frantically.

那只小狗狂吠着。《柯林斯英汉双解大词典》

3·Many dogs yapped and barked, but none appeared to exhibit extraordinary signs of pending natural disaster.

很多狗汪汪大叫，可是都没有异常灾难即将来临的症候。