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- Inference of the obverse of a proposition. 换质法推导一个命题的方法
- This is the inverse of his earlier proposition. 这和他早些时候提的建议截然相反。
- There is a map of the world on the wall. 墙上有张世界地图。
- He spread the map flat out on the floor. 他把地图平铺在地上。
- The road we should take is marked on the map. 我们要走的路已经标在地图上了。
- A proposition obtained by conversion. 逆命题通过换位得到的命题
- On the map the drains of each field are laid sown. 地图上标有每一块地的排水沟。
- Keeping a shop in this village is not a pay proposition. 在这个村子里开设商店是一桩亏本的买卖。
- I found this old map in the family archives. 我在家谱中发现了这幅旧地图。
- I prick the map with a pin to show our route. 我用大头针在地图上扎孔标出我们的路线。
- The airport is arrowed on the map. 飞机场在地图上用箭头标出。
- The map is in error regarding the junction. 这张地图在这个交点上是绘制错了。
- He drew a world map on a sphere. 他在球上面画了一幅世界地图。
- The positive or negative character of a proposition. 命题的性质命题的肯定或否定的性质
- A mapping of one space onto another or onto itself. 变换一个空间与另一个空间或自身的一一对应
- The students discussed the proposition that man is basically good. 学生们讨论了这么一个论点,即人性本善。
- The place is marked on the map with a crossing. 那个地方在地图上以十字形记号标出。
- His proposition is good in theory but cannot be put into practice. 他的建议在理论上可以，但不能付诸实现。
- Do not draw the map, just write the answer. 不要画地图，只写答案。
- Tunnelling under the English Channel is a big proposition. 在英吉利海峡海底凿隧道是一个大问题。
