beam

noun

/biːm/

Idioms

a line of light, electromagnetic waves or particles光线；（电波的）波束；（粒子的）束
- narrow beams of light/sunlight一丝丝的光线／阳光
- the beam of a torch/flashlight手电筒光柱
- a laser/electron beam激光束；电子束
- (British English) The car's headlights were on full beam (= shining as brightly as possible and not directed downwards).那辆汽车大开着前灯。
see also high beams, low beams
- He played the beam of his torch over the wall of the cave.他晃动着手电筒用光束照射岩洞壁。
- The beam from the lighthouse swept over the sea.灯塔的光束扫过海面。
- He was suddenly caught in the full beam of a searchlight.他突然被探照灯光捕捉到。
- They focus a high-powered X-ray beam on the affected area.他们用高强度的 X 射线光束照射感染部位。
Collocations Dictionary
adjective
- light
- bright
- intense
- …
verb + beam
- emit
- fire
- shoot
- …
beam + verb
- shine
- illuminate something
- light something up
- …
preposition
- beam from
- beam of
a long piece of wood, metal, etc. used to support weight, especially as part of the roof in a building梁
- The cottage had exposed oak beams.小屋的橡木梁裸露着。
- It was a charming cottage with original beams and a thatched roof.这是一个迷人的小屋，有原始的横梁和茅草屋顶。
- A concrete beam was put in to replace the wall we removed.一根混凝土梁被装上来代替我们拆除的墙。
- The missiles are bolted to reinforced beams in the floor.导弹用螺栓固定在地板的加固梁上。
Topics Buildingsc1
Collocations Dictionary
adjective
- timber
- wooden
- oak
- …
beam + verb
- support something
(especially British English)
(North American English usually balance beam)
a wooden bar that is used in the sport of gymnastics for people to move and balance on平衡木
- The gymnast performed a somersault on the beam.体操运动员在横梁上翻了一个筋斗。
a wide and happy smile笑容；眉开眼笑
- a beam of satisfaction满意的笑容
Wordfinder
- beam
- expression
- frown
- grimace
- grin
- leer
- scowl
- smirk
- sneer
- wince
Topics Appearancec2

词源Old English bēam ‘tree, beam’, of West Germanic origin; related to Dutch boom and German Baum.

Idioms

off beam

(informal) not correct; wrong不正确；错误
- Your calculation is way off beam.你的计算完全错误。

beam

verb

/biːm/

动词形式

present simple I / you / we / they beam	/biːm/ /biːm/
he / she / it beams	/biːmz/ /biːmz/
past simple beamed	/biːmd/ /biːmd/
past participle beamed	/biːmd/ /biːmd/
-ing form beaming	/ˈbiːmɪŋ/ /ˈbiːmɪŋ/

Idioms Phrasal Verbs

[intransitive, transitive, no passive] to have a big happy smile on your face笑容满面；眉开眼笑
- beam (at somebody) He beamed at the journalists.他笑容满面地面对记者。
- beam (with something) She was positively beaming with pleasure.她的确喜不自胜。
- beam something (at somebody) The barman beamed a warm smile at her.酒吧侍者对她热情地微笑。
- His broad face beamed a hearty welcome.他宽阔的脸上洋溢着诚挚的欢迎。
- + speech ‘I'd love to come,’ she beamed (= said with a large smile).“我很乐意来。” 她满面笑容地说。
- He beamed broadly at them, clearly very pleased to see them.他对他们眉开眼笑，显然见到他们非常高兴。
- His face beamed with pleasure.他高兴得满面笑容。
- She beamed happily at Maxim.她幸福地对马克西姆笑了。
- She positively beamed with satisfaction.她非常满意地笑了。
Topics Feelingsc2, Appearancec2
Collocations Dictionary
adverb
- broadly
- positively
- brightly
- …
preposition
- at
- with
[transitive] beam something + adv./prep. to send radio or television signals over long distances using electronic equipment发射（电波）；播送
- Live pictures of the ceremony were beamed around the world.典礼的实况经电视直播传到世界各地。
Topics TV, radio and newsc2
[intransitive] + adv./prep. to produce a stream of light and/or heat照射；发光；发热
- The morning sun beamed down on us.早上的太阳照射着我们。
- Light beamed through a hole in the curtain.光线透过窗帘上的一个孔照射进来。

词源Old English bēam ‘tree, beam’, of West Germanic origin; related to Dutch boom and German Baum.

Idioms

smile/grin/beam from ear to ear

to be smiling, etc. a lot because you are very pleased about something眉开眼笑；笑得合不拢嘴
- He was beaming from ear to ear.他笑得合不拢嘴。
Topics Feelingsc2