A transmission shaft is driven by a flat key.
传动轴用平键传动。
Lock damage or flat key to lose to also want to replace just in time.
锁损坏或钥匙遗失也要及时更换。
Another key element to running, is run with a... land with a pretty flat foot.
另外一个跑步的关键元素，是用一个…相当平坦的脚型来着地。
He let himself into the flat with a latch - key.
他用钥匙打开弹簧锁进入公寓。
A filtering flat bag is a key component of a cleaner.
过滤扁袋是除尘器的关键部件。
He let himself in the flat with a latch-key.
他用钥匙打开弹簧锁进入公寓。
他迅速跑回公寓去取钥匙。
他迅速跑回公寓去取钥匙。
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