重点讲解：
1. go up （价格、数量或水平）上涨，上升；
Interest rates went up.
利率上调了。
2. depend on 取决(于）；有赖(于)；
Whether or not we can start off tomorrow will depend on the weather.
明日能否出发，须视天气而定。
3. throw away 扔掉，丢掉；
It is an asset which we must enhance and not throw away.
这是个我们必须加强和不能丢弃的资产。
4. revover from 恢复健康；复原；
Nurses spend their lives helping other people recover from injuries and illnesses.
护士们终其一生在帮助其他人从伤痛和疾病中恢复。