lay 指小心地把人或物平放或横放，侧重动作安稳。
place 较正式用词，指把某物放在一个正确的位置上，侧重动作的正确。
put 普通用词，含义较广泛。指把人或物置于某处，并将其留在该处。
set 普通用词，指为了某种目的而将人或物放在一定位置上。指物是多指立着放。
参考例句
1. Set the baby on his feet. 让小孩自己站着，别扶着他。
2. You should set up a good example for your brothers. 你应该为你的兄弟们树立一个好的榜样。
3. One set for the mouse over indicator and another for the selected indicator. 一套用于鼠标掠过的指示器，其它用于选定的指示器。
英英解释
n.
1. a group of things of the same kind that belong together and are so used
2. (mathematics) an abstract collection of numbers or symbols
3. several exercises intended to be done in series
4. representation consisting of the scenery and other properties used to identify the location of a dra
5. an unofficial association of people or groups
6. a relatively permanent inclination to react in a particular way
7. the act of putting something in position
8. a unit of play in tennis or squash
9. the process of becoming hard or solid by cooling or drying or crystallization
10. evil Egyptian god with the head of a beast that has high square ears and a long snout; brother and m
11. the descent of a heavenly body below the horizon
12. (psychology) being temporarily ready to respond in a particular way
13. any electronic equipment that receives or transmits radio or tv signals v.
1. put into a certain place or abstract location
2. fix conclusively or authoritatively
3. decide upon or fix definitely
4. establish as the highest level or best performance
5. put into a certain state; cause to be in a certain state
6. fix in a border
7. make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
8. set to a certain position or cause to operate correctly
9. locate
10. disappear beyond the horizon
11. adapt for performance in a different way
12. put or set (seeds, seedlings, or plants) into the ground
13. apply or start
14. become gelatinous
15. set in type
16. put into a position that will restore a normal state
17. insert (a nail or screw below the surface, as into a countersink)
18. give a fine, sharp edge to a knife or razor
19. urge a dog to attack someone
20. estimate
21. equip with sails or masts
22. get ready for a particular purpose or event
23. alter or regulate so as to achieve accuracy or conform to a standard
24. bear fruit
25. arrange attractively adj.
1. (usually followed by `to' or `for') on the point of or strongly disposed
2. fixed and unmoving
3. situated in a particular spot or position
4. set down according to a plan:
5. being below the horizon
6. determined or decided upon as by an authority
7. converted to solid form (as concrete)
