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- We know air has weight. 我们知道空气有重量。
- We know air have weight. 我们知道空气有重量。
- Air has weight, though it is very light. 空气有重量，尽管它很轻。
- Though air has weight, it is very light. 虽然空气有重量，但是它很轻。
- Air has weight, and yetit is very light. 空气有重量,虽然很轻。
- Though air has weight, it is very light . 346虽然空气有重量，但是它很轻。
- Air has weight , though it is very light . 虽然空气很轻，但它有重量。
- As air has weight, it exerts force on any object immersed in it. 空气具有重量,所以它对浸入在它里面的任何物体会施加一个力。
- Since air has weight, it exerts force on any object immersed in it. 空气具有重量,所以处在空气中的任一物体都会受到空气的作用力。
- Ordinarily one does not believe that air has weight. 人们通常认为空气没有重量。
- Since air has weight, it must press down on the surface of the earth. 既然空气有重量，它就必定压向地球的表面。
- It is whether or not air has weight that a simple experiment will show. 一个简单的实验将证明的，乃是空气是否具有重要的问题。
- Having weighted it we know is importance. Having considered it we know is drawback. 部室标语物理实验室:、权然后知轻重,度然后知长短。
- We know that fishing is out of season now. 我们知道现在不宜钓鱼。
- We know you are competent in doing this job. 我们知道你可以胜任这项工作。
- As far as we know, that man is bad pay. 据我们所知，那人没有信用，欠债不还。
- So we know this plankton is very dangerous. 可见浮游生物是非常危险的。
- We know a lot about the structure of genes now. 如今我们对基因的结构有了较多的了解。
- We've lent him money before, and we know the score. 我们过去曾借钱给他,所以了解实情。
- That air has weight is true. 空气有重量是真的。
