| A | B |
|---|
| navigable | deep and wide enough for ships to pass through |
| dike | wall or bank to control or hold back the water of a river or sea |
| petrolem | oily liguid found in the earth, used to make gasoline |
| triple cropping | harvesting one crop then immediately planting another on the same land |
| loess | a fine, light silt that is very fertile |
| alluvial soil | parts of rock and silt deposited on the land when a river floods |
| Pinyin System | spelling and writing Chinese words that uses the Roman alphabet |
| Rooftop of the World | Tibetan Plateau |
