reserve,preserve,conserve的详细区别？

reserve的意思“保留（权利，意见等）”“预定（座位，机票等）”

i.e.I phoned to reserve two tickets。我打电话订了两张票。
I reserve the right to disagree。我保有否定的权利。

conserve和preserve都有“保护某一事物免受伤害，损失之意”，但前者强调“Trying to keep something in its original state”，也就是使事物维持在原状态。而后者则强调“Trying to make wise use of a situation”，明智地使用某事物，使其不致浪费或使用不当而遭到损失。

i.e.

• The Minister asked the people in cities to conserve water.部长要求城里面的人节约用水
• The fast bowler conserved his energy by shortening his run up.快的投手用缩短助跑来保存能量。
• During the summer, theatre owners conserve energy by switching off the AC. 在夏天，戏院老板关掉源来保存能量

• Our government doesn't do a good job of preserving our monuments.政府在保护古遗址方面做的不好。
• We must make an effort to preserve our forests.我们必须要保护我们的森林。
• This is a beautiful old house. We must preserve it.这个老房子很漂亮，我们必须要把它保存好。