A transmission shaft is driven by a flat key.

传动轴用平键传动。

youdao

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。

youdao

Interesting BE, many united at heart lock set source versions doesn't have flat key eye son, this show is once pledging love, then having no way out.

有趣的是，许多同心锁原本没有钥匙眼儿，这表示一旦定情，便无退路。

youdao

We'll be in the key of E-flat.

用降E调

耶鲁公开课 - 聆听音乐课程节选

But for all that high-minded ambition, the XO falls flat in a key area: the Web.

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