productive
adj. 多产的, 富饶的； 富有成效的; 有益的
同根：producer 生产者；制片人
productivity 生产率
1.They lived on the produc -tive land.
他们生活在富饶的土地上。
2.We had a productive meeting that solved some problems.
我们开了一个富有成效的会议, 解决了一些问题。
3.Man is the most decisive factor in productive forces.
人是生产力中最具有决定性的力量。
4.law of productive relations being suitable for conditions of productive forces
生产关系一定要适合生产力状况的规律
prosperity
n. 幸运; 顺利；兴旺, 繁荣
1.I wish you the life of happiness and prosperity.
我祝你生活幸福、万事如意。
2.The new agreement raised hopes for conditions of prosperity and harmony.
新的协议唤起了人们对繁荣与和谐前景的期望。
3.Adversity leads to prosperity.
穷则思变
4. A prosperity never seen before appeared in the countryside.
农村出现了前所未有的繁荣。
purchase
vt. 购买
n. 购买, 购置；买到的东西
1.We purchased a car before.
以前我们买过一辆车。
2.They made the purchase of a car.
他们购置了一辆小汽车。
3.That hat was a good purchase.
那顶帽子买得好。
4.What products do you want to purchase this time?
您这次主要想买些什么东西呀？
puzzle
vt. 使迷惑, 使难解
vt. & vi. 为难, 伤脑筋, 苦思
n. 智力测验, 智力玩具, 谜 ；难题; 令人费解的事[人]; 谜一般的事物
1.The letter puzzled me.
这封信使我迷惑不解。
2.The spelling of English is often puzzling.
英语的拼写法常常使人伤脑筋。
3.He shows a great interest in crossword puzzles.
他对填字游戏表现出很大兴趣。
4.Their reason for doing it is still a puzzle to me.
他们为什么干那件事仍然让我费解。
