1·Today such gravitational compensation probably would not occur: the outer layer of the Moon is too cold and stiff.
今天这种引力补偿很有可能不会发生：月球的外层过于寒冷和坚硬。
2·The birch tree has white bark, and this tough protective outer layer of the tree, this white bark, is waterproof.
桦树有白色的树皮，树上这个坚硬的保护外层，这个白色的树皮，是防水的。
3·In this case, that means the excitons in the outer layer flow to the inner layer, where they can exist in a lower (but still excited) energy state.
因此，这就意味着激子从纳米管外层流向内层，并以较低(但仍为激发态)的能态存在于纳米管中。
4·It sends chemical signals to the cerebral cortex, the outer layer of the brain, related to reasoning and memory.
它向脑部最外层的大脑皮层发送化学信号，从而影响推理和记忆功能。
5·Such a beam would easily penetrate the star's outer layer, but the stellar core would be sufficiently dense to absorb part of it.
这种光束很容易穿透恒星的外层，但是恒星的内核的密度将足以吸收其中的一部分。