If you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.

如果这里有一个马达，使桨上下移动，就可以在水槽的一端形成波浪，从左到右扩散。

youdao

The tank became bogged down in mud.

坦克陷入了烂泥中。

《牛津词典》

The hot water will break down the starch in the grain, turning it into a sugary substance called wort, which is then diluted, boiled, and transferred to a fermentation tank.

热水会打断谷物中淀粉的分子链，将其裂解为一种类似糖的物质，称为麦芽汁。然后经过稀释、煮沸之后，麦芽汁被转移到一个酿造箱中。

youdao

And if you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.

如果在水槽里放个发动器,来让水上下起伏,波浪形成于,水槽的一端,然后从左向右扩散。

麻省理工公开课 - 固态化学导论课程节选