It's a great idea as it tells you whether you need to hurry up and eat the food before it goes off.

这是一个好主意，因为这能告诉你是否需要在食物消失前赶快吃掉它们。

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Reconsider whether you NEED it.

重新考虑你是否需要它。

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Of course, whether you need treatment is up to you.

当然，是否需要治疗取决于你。

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Mike Lizotte of American Meadows, an online store, says before you start, you need know whether to plant tender bulbs or hardy bulbs.

VOA: special.2011.04.12

As you build these kinds of simulations, or anything like this, you need to think through whether things should be multiplicative or additive.

正如你建立各种仿真程序，或者类似的仿真程序时，你应该去想一想,他们应该是用加法还是用乘法。

麻省理工公开课 - 计算机科学及编程导论课程节选

What it's designed to do is to give you the resources you think you need so that I can focus on measuring whether you'velearned anything as opposed to whether you've remembered, memorized anything, OK, and of course, something to calculate with.

这样做的目的是给与你们,认为需要的资源，这样我就能专心于,衡量你们是否已经学到了什么,而不是你们是否记得了什么，背下了什么，还有，当然，要计算一下。

麻省理工公开课 - 固态化学导论课程节选

Whether you need to reach out to specific people or publish information online, you have to follow through.

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This could change your calculation of whether you need to pay estimated taxes.

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You should also consider specifically how much driving you plan to do in deep snow before deciding whether you need all-wheel drive.

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