ascending and descending++++++++floating and sinking

例句：

1. 1. The sun was ascending over the mountains.
   太阳正在山顶上升。
2. 2.The climbers ascended to the summit of the mountain.
   登山者攀登到了山顶。
3. 3.The astronaut ascended into space on a new mission.
   宇航员在一次新的任务中升入太空。
4. 1. The plane was descending towards the ground.
   飞机正下降向地面。
5. 2. The ship was descending through the stormy sea.
   船正通过暴风雨的海洋下降。
6. 3.The car was descending down the hillside.
   汽车正沿着山坡向下行驶。
7. 1. The boat is floating on the calm water.
   船正漂浮在平静的水面上。
8. 2. The balloon is floating in the sky.
   气球正在空中漂浮。
9. 3. The fish is floating on the surface of the lake.
   鱼正浮在湖面上。
10. 1. The ship was sinking slowly into the sea.
    船正缓慢地沉入海中。
11. 2. The boat was sinking fast due to the strong current.
    由于强劲的水流，船正快速下沉。
12. 3.The ship's engine was starting to sink.
    船的引擎开始下沉了。