The course of true love never did run smooth.

真爱的道路绝不平坦。

youdao

Thee course of true love never did run smooth.

真爱无坦途。 /真诚的爱情之路永不会是平坦的。

youdao

The course of true love never did run smooth .

真爱的过程从不是一帆风顺的。

youdao

While drugmaking has certainly become a more costly and controversial business in recent years, the path to miraculous medicines has never run smooth.

ECONOMIST: The cost of drugs

They keep the PC patched, keep its disk drive in good order, make sure its drivers are up-to-date, and generally make it run smooth as silk.

FORBES: Beware The Hacker's Surprising Secret Ally: Your Aunt Sally

Rio has received London's top tips on how to run a smooth transport system ahead of the 2016 Olympic and Paralympic Games.

BBC: London gives top transport tips for Rio 2016