The higher you go on the swing, the more potential energy you have.
你荡得越高，你就有越多的势能。
Potential energy is the high part of swinging. The higher you go on the swing, the more potential energy you have.
势能是荡秋千中的高度部分，你荡得越高，获得的势能就越多。
The advantage of a swing keel is that, with the keel raised, the sailboat can go into shallow water and sits lower on a trailer.
摇摆龙骨的优点在于，当龙骨升起时，船只能在浅水航行，并减低在拖车上的高度。
If you want to go and look at one painting on Valentine's Day that broaches the subject without being over explicit, why not go and see The Swing in London's Wallace Collection?
如果您想在情人节去欣赏一幅涉及此话题而又不过分直白的画作，不妨去华莱士收藏馆拜访这幅《秋千》。
Show her how to swing her body back and forth, then teach her how to let go and fall properly to the wood chips below (with your help, depending on her age.)
向她示范怎样把身体晃来晃去，然后放开手之后安然地落在下面的木屑上(根据她的年龄，提供你的帮助。)
让我们去荡秋千吧。
让我们去荡秋千吧。
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