A keel also provides weight low under the water to lower the boat's center of gravity below the waterline, which is needed so that the boat bobs back upright if knocked over by wind or waves.
龙骨同时也增加了船只的底部重量，从而将船只重心降到吃水线之下，而这对于船只在被风浪打翻时能够得以及时回正是十分必要的。
You might imagine they are like clouds floating across the sky, or waves on the ocean rising and falling.
你可以把它们想象成漂浮在天空的云朵，或者是海面上起起落落的波浪。
Forelegs are well covered with abundant curls or waves.
前肢上覆盖着丰富的卷毛或波浪状的毛发。
To form or display little undulations or waves on the surface, as disturbed water does.
成波浪状；起涟漪：在表面形成或表现出起伏或波浪，如被搅动的水形成的。
Used in pumping systems to protect equipment from damaging pressure surges or waves caused by rapid changes of flow within the pipeline.
用在泵系统上，保护设备不会受到由于管线内流量变化而产生的压力波动或起伏的破坏。
It cannot be done, because the ocean is always restless, always stirred up by winds or waves or tides.
那是做不到的，因为海水从不停歇，总是被海风、海浪和海潮涌动。
The hind legs should also be abundantly covered by hair falling in curls or waves, except that the hair should be short and smooth on the front of the legs below the hocks.
后腿上也覆盖着丰富的卷毛或波浪状的毛发，除了后腿飞节下方的前面，毛发短而平滑。
The hind legs should also be abundantly covered by hair falling in curls or waves, except that the hair should be short and smooth on the front of the legs below the hocks.
后腿上也覆盖着丰富的卷毛或波浪状的毛发，除了后腿飞节下方的前面，毛发短而平滑。
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