当鱼不使用鱼鳍时，会将它们折叠起来，收回到特殊的沟槽或者凹陷部位；这样鱼鳍就可以与身体保持齐平，以维持它们平滑的外形。
When not in use, the fins are tucked into special grooves or depressions so that they lie flush with the body and do not break up its smooth contours.
当它折叠起来时，它可以作为一个背包放在肩膀上。
When it is folded, it can be carried on the shoulder as a backpack.
当观看视频或查看照片时，有一个小支架可以从背面折叠出可以让你把手机坐立在水平面上。
A small kickstand folds out from the back of the handset allowing you to sit the phone horizontally when watching videos or viewing photos.
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