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1·I'm not clear about this matter, so I had better keep quiet.

我对这个问题不清楚，只能不赞一词。《新英汉大辞典》

2·Are you clear about the arrangements for tomorrow?

你清楚明天的安排吗？《牛津词典》

3·It is important to be clear about what Chomsky is doing here.

明确乔姆斯基在这干什么很重要。《柯林斯英汉双解大词典》

4·If you're not clear about something, you should ask him about it.

如果你对某事不清楚，你应该问他。

5·If you are not clear about what you have learnt, you'll probably use your class notes to study.

如果你对所学内容不清楚，你可能会使用课堂笔记来学习。

6·Schools should make students be clear about their policy on bullying.

学校应该让学生清楚他们对欺凌行为的处置方法。

7·Before we discuss the joint practices, let me be clear about what the practices are and are not.

在我们讨论联合实践之前，让我先明确一下什么是实践，什么不是实践。

8·We do need to get clear about both of those questions and so that's going to take the first several weeks of the class.

我们必须弄清楚这两个问题，这就是头几周课的主要内容。

9·You know, I am still not too clear about the hydrologic cycle, the transfer of water back and forth between the earth and the atmosphere.

你知道，我仍然不是很清楚水文循环，也就是水在地球和大气之间的来回转移。

10·While the best form of marketing for institutions is to be good at what they do, they also need to be clear about how they are different from others.

对于这些院校而言，虽说最好的营销方式是发挥自己的长处，但他们也必须清楚自己与众不同的地方。

明白

1·I am clear about the usage of this word at last.

这个词的用法我算是弄明白了。《新英汉大辞典》

2·And the most important thing to be clear about is similar to the question that was asked earlier.

最重要的是清楚明白，之前我们问过的相似问题。

3·He is very clear about the fact that she will not approve what he is doing.

他非常明白这个事实，她是不会批准他正在做的事情的。

4·By having intentions, it takes you off automatic and allows you to be clear about which direction you want to go.

通过制定目标，你就能把自己从全自动模式下解放出来，搞明白你自己到底要往哪个方向前进。

5·Ok, we've finished learning the measure words for today. Is everyone clear about them now? We'll learn more measure words later.

好的，今天的量词我们就学习到这儿，大家都明白了吗？以后我们还会和大家一起来学习量词。