I was amazed at his speed of working.

我对他工作的高速感到惊讶。

《柯林斯英汉双解大词典》

I drove back down the motorway at normal speed.

我以正常速度沿高速公路往回开。

《柯林斯英汉双解大词典》

I had already taken steps to speed up a solution to the problem.

我已经采取措施加快解决这个问题。

《柯林斯英汉双解大词典》

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