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1·I am busy, so it's up in the air.

我很忙，所以我还不能确定。

2·Beyond that, what level of detail and user profiling is up in the air at this point, though it's likely to include a record of your personal contributions to the site.

除此之外，用户资料详的细程度目前尚未定下来，不过其中很有可能会包含用户个人对网站所作的贡献。

3·I saw the traffic jams and wondered if it's possible to make buses high up in the air as well.

当我在路上遇见堵车，就会想是不是可以让公交车也在空中运行。

4·But last week, Liu said that it's all still up in the air and depends on his recovery, according to media reports in Chinese.

但据中国媒体报道，刘翔上周称一切都还悬而未决，取决于他的恢复情况。

5·It's a common complaint: Fly on a crowded plane and come home with a cold. What's in the air up there?

经常有这样的抱怨：搭乘了一班拥挤的飞机，回到家就感冒了。机舱的空气中究竟充满了什么？

6·It's like if you've ever seen anyone try to burn cooking flour: if you puff it up enough in the air, you can actually burn it.

就像你会看到过某人想要去点燃烹饪面粉：如果让其在空中其膨胀得足够大，就确实能让其燃烧起来。

7·Probably. It's still up in the air.

大概吧。但还不确定。

8·It's got some pretty ground breaking techniques and covers quite a lot leaving very little up in the air.

它得到了一些漂亮的突破性技术，涵盖了很多，几乎没有在空中。

9·We may be going skiing at Christmas, but it's still all up in the air.

我们圣诞节可能去滑雪，但还没有定下来。

10·It's not only the name of our company that will change... I expect that after this acquisition, there'll be a ton of things up in the air.

不但是我们公司的名字要改…我预计收购之后还会有一大堆的问题悬而未决。