Going down to the sea in ships is easy enough with gravity's help, but at high tide the ascent upon arrival gives the legs a good mountain work out.
借助重力，在船中沿海而下是容易的；但在满潮时，到达后潮的升涨使双脚难于离开？
Going down to the sea in ships is easy enough with gravity's help, but at high tide the ascent upon arrival gives the legs a good mountain work out.
借助重力，在船中沿海而下是容易的；但在满潮时，到达后潮的升涨使双脚难于离开？
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