beat the air 徒劳, 白费力
- What he said merely beat the air as his argument was not convincing at all.
他所说的一点用也没有,因为他的观点不令人信服。 - Birds fly very easily. They beat the air with their wings and climb up through the air. Then they spread their
鸟儿轻而易举地就飞起来了,它们用翅膀拍打着空气,穿过空气上空,展翅飞翔。 - The government brought in goods by air to beat the blockade.
为战胜封锁政府用空运进口货物。
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