他决定戒烟，为了健康。
tā juédìng jièyān ， wèile jiànkāng 。
He decided to give up smoking for his health.
戒烟非常困难，但我会坚持下去。
jièyān fēicháng kùnnán ， dàn wǒ huì jiānchíxiàqù 。
Giving up smoking is very difficult, but I will persist.
许多人在新年后决定戒烟。
xǔduō rén zài xīnnián hòu juédìng jièyān 。
Many people decide to quit smoking after the New Year.