举个例子，如果你去观察Digg自己的用户在群游现象(swarming)中的那种交互作用是如何的轻松，你会觉得非常的有意思。
For instance, it \ \ \ 's interesting to observe how the ease of interaction in Digg drives the swarming behaviour of its users.
如果你不能像蛙泳那样轻松，游那么长的距离，几乎可以肯定是因为你没有完全学会身体平衡。
If you cannot swim freestyle with similar ease, and for similar distance, as breaststroke, it's almost certainly because you've not yet truly mastered Balance.
与骨头不同，这种结实、柔韧的材质很像你的鼻子。它使鲨鱼在游的时候轻松弯曲。
Unlike bone, this firm, pliable material is rather like your nose, and allows the shark to bend easily as it swims.
应用推荐