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TOEFL IELTS BNC: 3945 COCA: 3741
beamnoun [ C ]uk/biːm/ us/biːm/

beam noun [ C ] LINE

B2 a line of light that shines from a bright object光线；光束；光柱

We could just pick out the trail in the weak beam of the flashlight.我们借着手电筒微弱的光仅能勉强认清路。
The rabbit stopped, mesmerized by the beam of the car's headlights.兔子被汽车前灯射出的光束迷住了眼，停了下来。
See also
moonbeam
sunbeam

a line of radiation or particles flowing in one direction（定向发出的）射束，粒子流

a laser beam激光束
an electron beam电子波

beam noun [ C ] WOOD

a long, thick piece of wood, metal, or concrete, especially used to support weight in a building or other structure（尤指支撑建筑物或其他结构的）梁，桁架，栋梁

The sitting room had exposed wooden beams.客厅顶上有裸露的木梁。
the beam

in the sport of women's gymnastics, a wooden bar on which the competitors balance and perform movements（女子体操运动中的）平衡木

beamverbuk/biːm/ us/biːm/

beam verb SMILE

[ I ] to smile with obvious pleasure高兴的微笑，眉开眼笑

She beamed with delight/pleasure at his remarks.听完他的话她高兴得眉开眼笑。
The child beamed at his teacher as he received the award.那个孩子在领奖时对他的老师报以微笑。
[ + speech ] "I'm so pleased to see you," he beamed (= said as he smiled).“见到你很高兴，”他微笑着说。

beam verb SEND OUT

[ I or T ] to send out a beam of light, an electrical or radio signal, etc.辐射；发光；闪光；发射电波；播送

The sun beamed (= shone brightly) down on the boat as it drifted along.阳光照在缓缓漂动的船上。
The concert was beamed (= broadcast) by satellite all over the world.音乐会经卫星播送到世界各地。

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