A high dive will make a swimmer go deeper upon entry and therefore, the swimmer will cover more vertical distance to get to the surface. Covering that extra distance costs time.

高度过高的出发跳水会导致入水过深，因此，游泳运动员到达水面的垂直距离会更长，滑过这段额外的距离也就更费时。

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No entry requirements are necessary for the part-time taster courses covering subjects such as philosophy, equine nutrition and astrobiology.

BBC: Rush to log on to online courses at Edinburgh University