The tyre's flat—the nail has gone right through.

轮胎瘪了，让钉子扎穿了。

《牛津词典》

"The rollercoaster is wooden and so unlike rides made from iron and steel there was always a chance of the odd nail or screw that would not be entirely flat," he said.

奥尔说：“这个过山车道不是由钢铁制成的，它是木制的，由此，有可能有旧钉子或者螺丝翘起造成轨道的不平坦。”

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Sometimes you just happen to be the person whose car runs over a nail in the road, and you end up with a flat tire.

有时候你就是那个人：开着小车，轮胎辗过钉子，最后轮胎瘪掉了。

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The Premier's women-only rooms come with curling and flat irons, bath salts and loofahs, nail files, a vanity kit, yoga mats and women's magazines (O, Self, Cosmopolitan)--all at no additional cost.

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