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v.发出嗡嗡声,哼唱( hum的过去式和过去分词 );忙碌,活跃; 双语释义:v.(动词)vt. & vi. 发出嗡嗡声; 哼 make a continuous low soundvi. 忙碌,活跃 be full of life or activen.(名词)[S]嗡嗡声 humming sound, esp. of an insect; indistinct murmur, esp. of many voices英英释义: hum[ hʌm ]n.the state of being or appe