swear off tobacco 立誓戒烟
V to promise to abstain from something 保证不做
to swear off drink
After being warned by his mother to swear off that demon knuckle cracking, young Donald Unger tested the accuracy of this hypothesis on himself.
自从小时候受到母亲警告说不可以敲打指关节后，小唐就开始在自己的身上测试这种推断的准确性。
Zock said it's too soon to tell people to swear off spray cleaners altogether, but added, "Nevertheless, from the perspective of precaution, we may recommend to use sprays only when really necessary."
Zock说，现在就告诫人们远离喷雾清洁剂还为时尚早，但他补充说：“毫无疑问，从预防的角度来看，我们推荐仅仅在必要的时候才使用喷雾剂。”
I've decided to swear off smoking.
我已宣布戒烟了。
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