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。
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。
Many runners train too hard, and then end up with less than a full tank on race day.
很多跑步者训练太过头了，然后在那天就不再状态饱满。
Many runners train too hard, and then end up with less than a full tank on race day.
很多跑步者训练太过头了，然后在那天就不再状态饱满。
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