the state of being or appearing to be actively engaged in an activity
an Islamic fundamentalist group in Pakistan that fought the Soviet Union in Afghanistan in the 1980s; now operates as a terrorist organization primarily in Kashmir and seeks Kashmir\\\'s accession by Pakistan
a humming noise
動詞 hum:
sing with closed lips
be noisy with activity
sound with a monotonous hum
make a low continuous sound
造句
A brief high-pitched humming or buzzing sound, such as that made by a swiftly passing object or a taut vibrating string. 尖嘯聲一種短暫尖銳的嗡嗡聲或滋滋聲，例如高速運動的物體和拉緊的震顫的線發(fā)出的聲音
The earth hums to me today in the sun, like a woman at her spinning, some ballad of the ancient time in a forgotten tongue. 今天大地在太陽光里向我營營哼鳴，象一個織著布的婦人，用一種已經(jīng)被忘卻的語言，哼著一些古代的歌曲。
The only sound he heard was the hum of the machine. 他聽到的唯一的聲音就是那臺機器的嗡嗡聲。
A toy instrument with a membrane that produces a sound when a player hums or sings into the mouthpiece. 卡祖笛一種當吹奏者向吹口處低吟或哼唱時一個膜能夠發(fā)出聲音的玩具樂器