1. 速度 sùdù n. speed
2. 甚至 shènzhì conj. even to the extent that
3. 节约 jiéyuē v. to save
4. 距离 jùlí n. distance
5. 公里 ɡōnglǐ M. kilometre
6. 因此 yīncǐ conj. therefore
7. 气候 qìhòu n. climate
8. 区别 qūbié n. difference
9. 温度 wēndù n. temperature
10. 差不多 chàbuduō adv./adj. almost
11. 暖和 nuǎnhuo adj. warm
12. 叶子 yèzi n. leaf
13. 不过 búɡuò conj. but;however
14. 可惜 kěxī adj. It's a pity;unfortunately
15. 抱歉 bàoqiàn adj. sorry,excuse me
16. 本来 běnlái adv. originally,essentially
17. 篇 piān M. a piece of (writing)
18. 材料 cáiliào n. material
19. 遍 biàn M. time;(for action) once through
20. 交 jiāo v. to hand over