The fly cannot break the light barrier.

苍蝇无法突破光速。

If the bus is really a rocket ship, traveling near the speed of light, and a fly flies inside the rocket ship, apparently breaking the light barrier, how's that possible?

如果巴士是一艘在以接近光速的速度行驶的火箭，那么苍蝇在火箭内的速度似乎非常慢，很显然突破了光速，这怎么可能呢？

Then I shall build a barrier of wires around my home, and across the paths which lead to my home; a barrier light as a cobweb, more impassable than a wall of granite; a barrier my brothers will never be able to cross.

然后，我将在我家周围以及通往我家的道路上架起一道电线屏障；像蜘蛛网一样的障碍灯，比花岗岩墙更不可逾越；我的兄弟们永远无法跨越的障碍。