飞机是在空中移动的。
腾空阶段：当运动员在空中移动之时，他的腿先向后摆动，然后迅速向前移动。
The flight phase: As an athlete moves through the air, his leg swings backward and then moves rapidly forward.
斐波那契布局让橡像木这样的植物在太阳在天空中移动的情况下在收集太阳光上具有竞争力。
The Fibonacci pattern gives plants like the oak tree a competitive edge while collecting sunlight when the Sun moves through the sky.
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