VOA慢速英语:Getting to the Root of How to Water Trees

词汇讲解：

1. survive vi. 幸存, 活下来
例句：These plants cannot survive in very cold conditions.
这些植物在严寒中不能存活。

2. moisture n. 水分, 水气, 湿气
例句：The moisture in the air makes it humid today.
今天空气中水气大, 天气很潮湿。

3. rainfall n. 下雨，降雨
例句：Rainfall is abundant in the region.
该地区降雨丰沛。

4. thirsty adj. 口渴的
例句：They watered the thirsty fields.
他们给干旱的土地灌水。

5. sign n. 征兆, 迹象
例句：The roof of the new tunnel hasn't been properly supported; it shows signs of falling in.
新隧道的顶部支撑得不好, 已显出坍塌的迹象。

6. satisfy v. 使满意; 满足
例句：Her father tried his best to satisfy her demands.
她的父亲想尽一切办法来满足她的要求。

7. absorb vt. 吸收
例句：Dry earth absorbs water quickly.
干土吸水很快。

8. harm vt. (使)受到损害, 伤害
例句：Smoking harms our health.
吸烟有害健康。

9. organism n.有机物, 有机体; 生物
例句：It was an infectious organism that he studied.
他研究的是一种可传染病菌的微生物。

10. function vi.工作, 运行, 起作用
例句：The machine will not function properly if it is not kept well-oiled.
机器没有上好油, 就不会顺利地运转。