保持纯洁的心，不要轻易说出你的爱。

Keep purity of heart, never speak out your love.

youdao

是的，婚前守贞是重要的，因为要保持纯洁。

Yes, It is important to be a virgin before marriage because one must remain pure.

youdao

那保持纯洁是不得疱疹的最好方法就是有道理的了。

It makes sense then, that the best way to prevent herpes is to adopt chastity.

youdao

I hope you remember from the Sixth Elegy, the Sexta Elegia, that we read a few classes ago that Milton had told his friend Charles Diodati ; that an aspiring epic poet should only drink water; ; two, should refrain from eating meat; and three, should keep his body chaste.

我希望你们还记得《Sexta，Elegia》的第六挽歌,我们前几课读的，讲弥尔顿跟他的朋友查尔斯说,一个有抱负的史诗诗人应该只记得喝水;,二，应该避免食肉;,三，应该保持自己身体的纯洁。

耶鲁公开课 - 弥尔顿课程节选