| [/buːm; bum/] v 用法:
1 [I, Ip] make a deep hollow resonant sound 发出深沉、有回响的声音:
waves booming on the seashore 撞击海岸发出隆隆声的海浪 *
We could hear the enemy guns booming (away) in the distance. 我们能听到远处敌人的大炮轰隆声. *
The headmaster's voice boomed (out) across the playground. 校长瓮声瓮气的声音传遍操场. 用法:
2 [I, Ip, Tn, Tn.p] ~ (sth) (out) utter (sth) in a booming voice 用深沉的嗓音讲（话）:
`Get out of my sight!' he boomed. ｀走开!＇他用低沉的声音说. boom 2
n (usu sing 通常作单数) deep hollow sound 深沉的声音:
the boom of the guns, the surf 大炮、波涛拍岸的隆隆声. boom 3
[/buːm; bum/] n sudden increase (in population, trade, etc); period of prosperity （人口、贸易等的）突然增加; 繁荣昌盛时期:
The oil market is enjoying a boom. 石油市场欣欣向荣. *
[attrib 作定语] a boom year (for trade, exports, etc) （贸易、出口等）繁荣昌盛的一年. boom 4
v [I] have a period of rapid economic growth 处於经济迅速发展时期:
Business is booming. 商业正在迅速发展. boom 5
[/buːm; bum/] n 用法:
1 (on a sailing-boat) long pole used to keep the bottom of a sail stretched 帆的下桁; 帆杠. =>illus at yacht 见yacht之插图. 用法:
2 (also derrick boom) pole attached to a derrick crane, used for loading and unloading a cargo 吊杆. 用法:
3 (a) barrier (usu of heavy chains) placed across a river or harbour entrance as a defence against enemy ships 横江铁索（用以防御敌舰）.
(b) barrier (usu a mass of logs) placed across a river to prevent logs from floating away 水栅（通常为圆木, 用以防止木材漂走）. 用法:
4 long movable arm for a microphone 话筒的可移动长臂:
[attrib 作定语] a boom microphone 有可移动长臂的话筒. |