您要查找的是不是：
- evaporation impurity source 蒸发杂质源
- Be careful not to lose too much liquid by evaporation. 小心，不要因为蒸发作用而失掉过多的水份。
- The news comes from a reliable source. 这消息来自可靠的来源。
- The oxygen react vigorously with the impurity in the iron. 氧气与铁中的杂质发生剧烈的化学反应。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
- A source of irritation or annoyance. 令人生气的事或者引起烦恼之事
- The groundwork or source of something. 基础，根源某事物的基础工作或根源
- Where is the source of the Rhine? 莱茵河发源于何处？
- Impurity of the water made it unfit to drink. 因为水质不纯净，所以不能饮用。
- An instrument that measures the rate of water evaporation. 汽化计，蒸发计测定水蒸发速率的仪器
- He's been a source of discord and worry. 他成为不和和烦恼的根源。
- A source of harassment, annoyance, or pain. 使人痛苦的东西骚扰，烦恼或痛苦的来源
- Is the water polluted at source or further downstream? 河水是在源头还是在流出之後受到污染的？
- Hard work is the ultimate source of success. 努力工作是成功之本。
- The proof came from a plenteous source. 证据来自丰富的渠道。
- Disconnect the evaporation control system. 断开蒸发控制系统。
- This impurity must be purged away after death. 这种污秽应该在死后加以净化。
- Do you know the source of Amazon River? 你知道亚马逊河的源头吗?
