She would be guilty of betraying her own mother.她会犯下背叛自己母亲的错误。Don't try to trick me with words into betraying the secret.别拿话来诈我.He was on the verge of betraying his secret.他险些儿(差点)泄露了秘密....
I haven't practiced my French for months and it's getting rusty.几个月不用,我的法语又回生了.He was a practiced musician.他是一位演技娴熟的音乐家.He practiced to steal the purse from the lady.他竭力想窃取那位女士的钱夹....