重点讲解：
1. be devoted to 爱好的；热衷的；致力（于…）的；
例句：Horace is so devoted to his garden that he hasn't been away for 10 years.
霍勒斯对他的花园太过上心，都有10年没出过远门了。
2. balance out （使）平衡；（使）相抵；（使）抵消；
例句：The strenuous exercise undergone could balance out the increased calories.
所进行的剧烈运动可以消耗掉增加的热量。
3. be responsible for 对（某事物）负责的；
例句：He is directly responsible for it.
他直接负责那件事。
4. at the end 最后；
例句：At the end, they agreed to her arrangement.
最后，他们同意了她的安排。
