音标
英语音标：[biːm]
美语音标：[bim]
翻译
vi.微笑；发光
vt.播送；发射；用梁支撑
n.桁条；光线；(光线的)束；(横)梁
例句
The machine directs a powerful beam at the affected part of the body.
这种机器将很强的射线对准身体感染部位。
Researchers realised that a tunable laser beam might be useful in surgery.
研究人员意识到，可调谐激光束也许可以用在外科手术中。
All the light bars were turned on which filled the room with these rotating beams of light
所有灯条都打开了，满屋都是旋转的光柱。
