So my message to all of you in this is: don t wait to do the things you know need to be done.

所以我要忠告全班同学的是：如果你知道有些事情需要做的话，千万不要等。

youdao

Wait. Don't you first need to study the other ?" so that you can be more sensitive to others?"

等等，你难道不要首先研究别人,才能对别人更敏感吗“

哈佛公开课 - 幸福课课程节选

One day we'll be able to download all our music directly from the Internet, but you don't need to wait for that Buck Rogers utopia -- the Web is a great place to buy music right now.

CNN: Where to buy music on the Web

You don't need to wait for e-books.

CNN: When digital culture meets print culture

And now, thanks to instant-reading technology, you don't even need to wait 15 seconds to start up the device: "I press, I read, it's instant... it's a book!"

ENGADGET: Bookeen's upgraded, colorful Cybook Opus to debut on May 7