You don t have to hurry to walk the city s center in less than an hour.

你不需要在一小时内匆匆地将市中心走完。

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In this way, you don`t have to review all the material again.

这样，你就不必再复习所有的材料了。

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With multimedia, you don 't have to be a passive recipient. You can control. You can interact. You can make it do what you want it to do.

对于多媒体，你不再是一个被动的观众，你可以控制，可以交互作用，可以让它按你的需要去做。

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You don't have to be a VIP celebrity." Some experts say famous people may bring public awareness to an issue.

VOA: special.2009.05.08

When you don't have to worry about criteria like that ordinary, mechanical energy rules supreme, and that's dictating where equilibrium lies.

如果你不担心像这样的要求,通常的机械能就占据主要地位，并且决定平衡位于何处。

麻省理工公开课 - 热力学与动力学课程节选

So usually, I don't have to do much more than google, and turn in the first sentence and sure enough,

所以，我经常谷歌，输进第一句话，然后非常确信，

对于抄袭的想法 - SpeakingMax英语口语达人

You don't have to go down so far and you don't have to go all the way back up.

CNN: Shoveling snow? How to protect your back (and your heart)

Plants don't have to be overhauled to accommodate different cars, and the car bodies don't have to be retrofitted for snazzy features.

FORBES: Magazine Article

When you don t have to put food on the table for others, you can feed your need to drive the latest models and ponder the cars of the future.

FORBES: Best Cars For Singles 2006