重点讲解：
1. depend on 取决(于)；有赖(于)；
例句：It goes without saying that our plans depend on the weather.
不消说，我们的计划取决于天气如何Y^M.V0,pu(C!E[W0。
2. for instance 例如；譬如；
例句：For instance, one of our cargo ships sank last week in typhoon.
例如，我们的一艘货轮上星期在台风中沉了zXFaWnZk^9Pgi。
3. once in a while 偶尔；间或；
例句：We go to the park for a picnic once in a while.
我们有时去公园野餐=4%-Z+_6n~H6。
4. be used to sth./doing sth. 习惯于；
例句：The old man and his wife have been used to living a simple life.
这对老夫妇已经过惯了简朴的生活y!u@h9nr%L86。