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- Inference of the obverse of a proposition. 换质法推导一个命题的方法
- As the car hit the tree he was snot out. 汽车扭在村上，他被猛地摔了出来。
- This is the inverse of his earlier proposition. 这和他早些时候提的建议截然相反。
- The bird sang high and clearly in the tree. 鸟儿在树上清脆地高歌。
- A proposition obtained by conversion. 逆命题通过换位得到的命题
- The annular markings on a tree indicate its age. 树的环形纹理显示其年龄。
- The car hit the tree with a sickening crash. 那辆汽车撞在树上发出让人难受的撞击声。
- 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。
- An arrow whizzed past and stuck in a tree. 一支箭“飕”地一声飞过去，钉在一棵树上。
- The squirrel ran up a tree and got out of my reach. 松鼠跑到树上去了，我逮不着。
- The workers saw off a limb from the tree. 工人从树上锯下了一根大树枝。
- He is not made for climbing the tree of knowledge. 他不是生来适于攀登知识之树的。
- He tethered his horse to a tree. 他用绳子把马拴在树上。
- The ivy twined round the oak tree. 长春藤盘绕着橡树。
- The positive or negative character of a proposition. 命题的性质命题的肯定或否定的性质
- 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。
- I saw the bird at the very top of the tree. 就在那棵树顶上我看到那只鸟。
- 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。
- He is hit by a falling tree and killed on the spot. 一棵树倒下来，把他当场砸死了。
- She was sitting in the shade of a big olive tree. 她正坐在一棵大橄榄树的树荫下。
