You shouldn't drink and drive.

你不该酒后驾车。

There are calls for more punitive measures against people who drink and drive.

有人呼吁对酒后驾车的人要有更具处罚性的措施。

If it's illegal for someone under 21 to drink, it should be illegal for them to drink and drive. That's a no-brainer.

如果不满21岁喝酒是违法的，那他们酒后驾车也应是违法的。这太容易理解了。

I know, don't drink and drive.

我知道，酒后不开车。

Also, don't drink and drive.

同时，也不能醉酒驾车。