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BNC: 21122 COCA: 19661

to make something smaller, thinner, or weaker使减少;使减弱;使降低

Radiation from the sun is attenuated by the earth's atmosphere.地球大气减弱了太阳辐射。
BNC: 21122 COCA: 19661
BNC: 21122 COCA: 19661
BNC: 21122 COCA: 19661
attenuate
To become, or to make something weaker: lessen, reduce, subside...
Rates of decrease and the process of decreasing: decrease, reduction, decline...

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