1 a line of light 光线;光束:
the beam of a torch手电筒的光线The car's headlights were on full beam (= giving the most light possible and not directed downwards).汽车车头灯直射前方。a laser beam一束激光
2 a long piece of wood, metal, etc that is used to support weight, for example in the floor or ceiling of a building 梁;桁条
3 a happy smile 粲然一笑
beam²
/bi:m ||; bim/verb
1 [I] beam (at sb/sth) to smile happily 愉快地微笑:
I looked at Sam and he beamed back at me.我望着萨姆,他朝我笑笑。
2 [T] to send out radio or television signals 发出(无线电或电视)信号:
The programme was beamed live by satellite to many different countries.那个节目通过恒星向许多国家作现场转播。
3 [I] to send out light and warmth 发出光和热:
The sun beamed down on them.太阳照射着他们。