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词汇 beam¹
释义 beam¹ /bim; biːm/
n [C]
1 a) a line of light shining from the sun, a lamp etc 光线,光束:
The beam of the flashlight flickered and went out. 手电筒的光闪了一下就灭了。
b) a line of energy such as RADIATION or MICROWAVEs 〔辐射能、微波等的〕射束,射线
2 a long heavy piece of wood or metal used in building houses, bridges etc 〔建筑物的〕梁
3 a big happy smile 喜色,笑容
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