关键之处就在于速度，太阳能的传递几乎就在瞬间完成，所以很少能量以热的形式耗散掉。
Speed is the key –the transfer of the solar energy takes place almost instantaneously so little energy is wasted as heat.
所以当我们重温这项世界上最盛大的体育赛事所带给我们的每一个激动人心的瞬间时，我们自然而然地会想到那些球员，正是他们代表各国在世界杯上上演着一场场惊心动魄的碰撞。
So while we all relive all the excitement that the world's largest sporting event has to offer, we reflect on the players who made the world Cup the dramatic clash of nations it always is.
其二，这个球有弹性，所以在我放开的瞬间，可能会震动。
Number two, this thing is very springy, so the moment that I let it go, it probably goes in some kind of oscillation.
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