那阴影固定不动了。
但这些植物都是固定不动的，似乎在进化中这也很不利。
But these plants are immobile and can't move around in their environment which is seemingly a pretty big evolutionary disadvantage.
“固定不动的”人造卫星被用来转播及广播电磁通讯信号。
Manned "stationary" satellites are used to relay and broadcast electromagnetic communication signals.
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