1.
The best(greatest) fish keep(swim near) the bottom.
好鱼游水底（指：有价值之物不能轻易得到）。
2.
The best fish keeps the bottom .
好鱼贴底游，瑰宝难寻求。
3.
The water was clear to the bottom. A school of tiny fish flicked hither and thither.
河水清澈见底，一群小鱼悠然地游来游去。
4.
The best fish swim near the bottom.
〔谚语〕好鱼居水底，要得宝物不容易。
5.
The best fish are near the bottom.
(谚语)好鱼居水底，要得宝物不容易。
6.
At this magical place，the water is crystal blue and you can swim with hundreds of different species of fish.
在这梦幻般的世界中，海水湛蓝、澄澈见底，您还可以跟好几百种不同的鱼类悠游其中。
7.
After a long time it got out of the drain and reached the sea.
过了好一阵子，这条鱼游出了排水管到达海洋。
8.
The fish swim about in the water.
鱼在水里游来游去。
9.
The game is introduced: The seamaid's home is certainly in the sea floor, pink coral, colorful shoal of fish and seaweed, family so beautiful.
游戏介绍：美人鱼的家当然是在海底喽，粉红的珊瑚、彩缤纷的鱼群和海草，好美丽的家。
10.
ground bait
投入水底引鱼的诱饵
11.
The river ran as clear as crystal and if you watched closely you could now and then catch a glimpse of fish hovering over the pebbles on the bottom.
这条河以前曾清澈见底，只要你低头注意看，就可以不时看到鱼在水底的石子之上自在游动。
12.
Answer: Fish in a net (The "house" is the water; "windows" are holes in the net.)
谜底：网中之鱼(屋子指水、窗户指鱼网眼)。
13.
tropical fish that resembles a goby and rests quietly on the bottom in shallow water.
与虾虎鱼相象的热带鱼，在浅水底静卧。
14.
The fish swam along the drain.
鱼沿着排水管游下去。
15.
The fish were rising.
鱼正游上水面觅食。
16.
Surrounded heavily by our troops, the enemy were like a fish in the pot.
敌军被我军重重包围，已成为釜底游鱼。
17.
Who can call the fish from the depths of the see, yes I can!
谁能召唤出渊底的游鱼?是的我能!
18.
The swimmer dived beneath the water.
该游泳者潜入水底。