n.嗡嗡声；哼声；杂声
v.发低哼声；哼(曲子)；活跃
int.哼；嗯（用以表示犹豫）
He could hear the hum of the bees in the garden. 他听得见花园里蜜蜂的嗡嗡声。
His strong voice cut through the hum of conversation like a knife through butter. 他那宏亮有力的声音一下子压倒了嗡嗡的谈话声。
The background with all of my phones is totally silent, no hiss, hum at all, just total blackness. 背景与我的所有电话，是完全沉默，没有噪音，哼声一切，在刚刚共有黑。
She heard the hum of voices in the house. 她听见了屋子里的嘈杂声。
用作动词 (v.)You don't need to sing loud, you just hum softly. 你不必大声唱,只要轻轻哼就好了。
Hum the opening bars of your favourite tune. 哼一哼你喜爱的曲子的开头几个小节。
She was humming to herself. 她独自哼着歌。
Things are starting to hum with activity. 气氛变得活跃起来。
The whole place was humming with life when we arrived. 我们达到时，到处一片繁华景象。
用作感叹词 (int.)Hum, you're joking! 哼，你在开玩笑吧！
Hum! Trust you to make a mess of it. 哼!让你把这事搞得一团糟。
Remember, who agree you this siring outing, hum? 别忘了，是谁要带你们去春游的，嗯？
hum的基本意思是“发出嗡嗡声,哼”,发出的声音可以是悦耳的,也可以是吵闹的,其发出者可以是人,也可以是别的发声体。hum还有“忙碌,活跃”之意。
hum可用作及物动词,也可用作不及物动词。用作及物动词时,后可接名词或代词作宾语,也可接由动词不定式充当补足语的复合宾语。
hum的过去式和过去分词均为hummed。
