n.节制者；戒酒者
He swore to abstain from smoking. 他发誓要戒烟。
The doctor asked the patient to abstain from smoking. 医生叫这位病人戒烟。
The doctor has advised him to abstain from smoking. 医生已经劝他戒烟。
It is hard to abstain smoking and drinking . 戒烟戒酒并不是一件容易的事情。
I abstain from drinking alcohol. 我不喝酒。
