hum
Word family adjectivehummablenounhummerhumminghummingbirdverbhum
hum1 /hʌm/ ●○○ verb (hummed, humming) 1 [intransitiveI, transitiveT]SING to sing a tune by making a continuous sound with your lips closed 哼(曲子)hum to yourself Tony was humming to himself as he drove along. 托尼边开车边哼着曲子。
He began to hum a tune. 他开始哼唱一支曲子。
2 [intransitiveI]SOUND to make a low continuous sound 发出嗡嗡声 Machines hummed on the factory floor. 机器在车间里嗡嗡作响。
3 [intransitiveI]BUSY PLACE if a place hums, it is full of activity – use this to show approval 〔场所〕忙碌,活跃〔含褒义〕 → busy By nine o'clock, the restaurant was humming. 到9点钟时,餐馆里开始忙碌起来。
hum with The streets were humming with life. 大街上熙熙攘攘。
4. hum and haw British EnglishBrE to take a long time deciding what to say or do 支吾,吞吞吐吐;迟疑 → hesitate SYN American English hem and haw hum2 noun [singular] 1 SOUNDa low continuous sound 嗡嗡声;低沉而持续的嘈杂声hum of the distant hum of traffic 远处嘈杂的车流声
► see thesaurus at sound 2. hum of excitement/approval etc the sound of people talking because they are excited etc 兴奋/赞同等的嗡嗡声 Origin hum1 (1300-1400) From the sound