He tried to quit smoking many times but failed
戒烟───quit smoking;多次───many times
It's not easy to quit smoking cigarettes.───戒烟并非易事。
I was trying to quit smoking at the time.───当时我正在努力戒烟。
Well, parenthetically, I was trying to quit smoking at the time.───嗯，插一句，我那时正在努力戒烟。
It'd be a bit difficult for me to quIt'smoking, actually.───要我戒烟实在有点困难.
She had finally carried out her promise to quIt'smoking.───她最终实现了戒烟的诺言.
The doctor told him to quIt'smoking, but it didn't make a dent.───医生劝他戒烟, 但没引起他的注意.
He quIt'smoking last year.───他去年戒烟了.
Additionally, adults were asked to say which was easier to quIt'smoking.───此外, 询问成年人哪种卷烟使人更容易戒烟.
I was trying to quit smoking at the time.
I quit smoking cold turkey.
Rosie's put on five kilos since she quit smoking.
I'm still trying to quit smoking.
My father has quit smoking.