n (1) (房屋或船的)横梁 (large long heavy piece of wood， metal， concrete， etc， usu horizontal and used to support a building， other structure， or the deck of a ship joining the sides) [C]：The carpenter was raising the roof～. 木匠在架房梁。the low oak～s 低低的橡木房梁;

(2) 天平的横杆 (the main bar of weighing scales from which the weights are hung) [C];

(3) 光线(束) (ray or stream of light or other radiation from some bright objects) [C]：the～of the torch/the searchlight手电/探照灯的光束;A～of light/sunlight penetrated the darkness. 一束光/阳光穿透黑暗。I could see the～of his flashlight waving around in the dark.我看得见他的闪光灯在黑暗中到处闪亮。a sun～阳光(束);a～of hope (fig)一线希望;〖同〗ray，gleam;

(4) 容光，笑脸 (bright， happy look or smile)[C]：say sth with a～of pleasure/welcome/satisfaction容光焕发/笑容可掬/心满意足地说;A～of pleasure lit up her face. 高兴的笑容使她神采弈弈。

(5) (无线电或雷达)波束 (series of radio or radar wave sent out to guide ships or aircraft) [C];

→′moonbeam n 月光(束);

v (1)发光(热)((of the sun or other shining objects) give out bright light and warmth) [I]：The sun～ed in the sky/through the clouds.太阳光在空中照耀/穿过云层照射下来。The sun was～ing brightly. 太阳熠熠发光。A searchlight～ed in the distance.远处有探照灯光在扫射。〖同〗gleam，glow，shine;

(2) 快活地微笑 (smile happily and broadly) [I， I+prep(at)]：The winner/His face～ed with satisfaction/delight/happiness. 胜利者/他的脸上绽开了满意/欣喜/快活的笑容。He～ed at her. 他朝她快活地微笑;〖同〗shine;

(3) 以微笑表示 (express by smiling) [T+n]：The hostess～ed a cheerful welcome as she opened the door.女主人开门时微笑着表示热烈欢迎。

(4) 播送 (broadcast a message， television programme， etc) [T+n， T+n+prep (to)(from)]：The news/World Cup Final was～ed from Britain to Japan.这消息/世界杯决赛由英国播送到日本。This transmitter～s radio waves all over the country. 这台发报机把无线电讯号播往全国各地。～ pictures of a riot to the capital 把动乱的照片发往首都