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/flæt/ adj.
If something such as a tyre or ball is flat, it does not contain enough air.
(轮胎或球)瘪了的，撒了气的
I got a flat tyre (= the air went out of it) after driving over a nail.
我的车胎扎了钉子后瘪了。
Last time I had a flat tire, I pulled my truck into one of those side of the road gas stations.
上次我的轮胎瘪了，我把我的卡车推进马路边的加油站。