There are fast trains, slow trains, trains that go under the ground, and trains that go through mountains.

这儿有快车，慢车；还有地下火车和穿山火车。

youdao

I always thought you were slow even driving on the less crowded fast lane.

我一直认为，即使在不那么拥挤的快车道上，你开车也很慢。

youdao

Some students were fast, and some were slow.

有些学生跑得很快，有些很慢。

youdao

Technical tinkering, such as changing the formulation of a drug from a fast-acting pill to a slow-release system, is a common tactic.

ECONOMIST: Prescription drugs

The Free Fighter includes four fully customizable macro buttons for quick access to combos, as well as two variable speed turbo buttons for fast, slow or user-created tap speed.

ENGADGET: Nyko Free Fighter joystick brings flexible controls, arcade flair to the PS3

The question is how far fast-moving realities will run ahead of the communion's slow-moving and gentlemanly procedures.

ECONOMIST: When you're a church, breaking up is hard to do