1. 绿洲   peninsula   country   reef   oasis   Hint Half-n-half Clue   2. 瀑布，秋天   city, town   desert   waterfall, falls   bay   Half-n-half Clue   3. 海   city, town   bay   island   sea   Half-n-half Clue   4. 礁石   waterfall, falls   lagoon   peak   reef   Half-n-half Clue   5. 盐水湖   oasis   mountain   lagoon   ocean   Half-n-half Clue   6. 谷   valley   cape   lake   lagoon   Half-n-half Clue   7. 高原   plateau   lake   sea   city, town   Half-n-half Clue