| A | B |
| let up | to become less severe; to stop |
| moist | damp; a lettle wet |
| indicate | to show |
| gloomy | depressingly dark; depressed; sad; with no hope |
| clear up | to become or to make clear |
| swamp | an area of wet land partly of totally covered with water; to flood with water or as if with water |
| lousy | very bad |
| vegetation | the total plant life in an area |
| wood | a small forest; the substance from trees used for making furniture, etc. |
| vast | very large |
| blow over | to go away without causing any problems |
| current | the forward movement of water in a river or ocean; existing now |
| channel | a narrow sea between two pieces of land; the deeper part of a river; a source of TV communication |
| horizon | the place in the distance where land and sky seem to meet |
| horizontal | level with the horizon |
| latitude | imaginary lines running north-south around the earth used for giving position |
| longitude | imaginary lines running west-east around the earth used for giving position |
| optimum | most favorable for some purpose |
| phenomenom | a fact or event that can be seen |
| uneasy | a little worried; uncomfortable |
| turn into | to become; to make something become another thing |
| wash off | to wash the surface of something |
| unit | a specific quantity used as a standard of measurement |
| vapor | a substance in its gaseous state |