In water, paddles and OARS have given way to screw propellers and turbines, but stability in response to the rolling motion of water is still a problem.
在水里，桨橹已经由螺旋桨和涡轮机替代，但是在涌动的水里使船只保持平稳仍然是一个问题。
In water, paddles and OARS have given way to screw propellers and turbines, but stability in response to the rolling motion of water is still a problem.
在水里，桨橹已经由螺旋桨和涡轮机替代，但是在涌动的水里使船只保持平稳仍然是一个问题。
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