重点讲解：
1. by rights
按理说；按道理；
eg. She did work which by rights should be done by someone else.
她做了理应由别人做的事情。
eg. By rights, half the reward should be mine.
按理说，有一半奖赏应该是我的。
2. depend on
依靠；依赖；
eg. You can depend on him to make a sound choice.
你可以依靠他作出正确的选择。
eg. The elephants in the herd depend on one another for help in time of trouble.
当遇到麻烦时，大象们互相依赖、互相帮助。
3. all year round
一年到头；终年；
eg. Switzerland is a very popular tourist resort all year round.
瑞士是一个全年受欢迎的旅游胜地.
eg. In tropical climates they can grow flowers all year round.
在热带地区的国家。人们可以常年种植各种花草。