Hi, my name is Dan Rusiecki, I'll be your literature teacher, and please be warned that failing my class is very very difficult.

嗨，我是丹·鲁史克，我将是你们的文学老师，有言在先哦，我的课你们挂不掉的。

youdao

But please be warned that even the most elegant phrasing will not work if you have not completely heard the essence of the problem.

不过请注意，如果你还未听完整个问题的精髓，即使用词再得体也没有用。

youdao

The librarian went over to a small, noisy boy. "Please be quiet!" she warned. "The people around you can't read!"

图书管理员走到一个喧闹的小男孩身边，警告说：“请安静！你周围的人都不能读书了！”

youdao

Tumblr confirmed the ongoing issue to us this morning, and warned users who've seen the message to "please log out of all browsers that may be using Tumblr, " as that's one way the "viral post" is being spread.

ENGADGET: Hacker group rewriting Tumblr pages into a racist, anti-gay screed (update: Tumblr says it's fixed)