1. In which case do you use less effort?Why? 在哪种情况下你用的力气较小?为什么?
2. About 43 species: N Africa, W Asia, S Europe; one species in China. 大约43种:非洲北部,亚洲西部,欧洲南部;中国有一种。
3. One species: from N Africa through SW Asia and India to China and continental SE Asia. 一种:根据非洲北部经由亚洲西南部和印度到中国和大陆的东南亚。
英英解释
n.
1. (of a solution) concentration expressed in gram equivalents of solute per liter
2. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; con
3. the cardinal compass point that is at 0 or 360 degrees
4. a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogr
5. the 14th letter of the Roman alphabet