实用口语：vice

vice 恶习或不良习惯, 可以指一个人的恶习或不良习惯，例如吸烟、酗酒、赌博等.

(医生对病人说)

e.g. It's about time you gave those up. My last vice. 你该放弃那些坏习惯了. 我最后的这点爱好了.

(一个人给另外一个人烟)

e.g. You want one? No, not my vice. 抽一支吗? 不抽了, 没有这个爱好. 

(妻子跟老公说)

What's your cholesterol? It's my one vice. I'm keeping it. 你胆固醇都啥样了? 我就这一个爱好. 我这爱好就这样了不改了.