飞行员在黑暗条件下飞行并到达模拟环境，在海豹队员用速降绳降落的时候飞机处于悬停状态。
The pilots flew in the dark arrived at the simulated compound and settled into a hover while the SEALs fast-roped down.
实际上，月亮周期的下半周比上半周攻击频率要高出33％，月光最弱时也提供了食肉动物攻最黑暗的攻击条件。
Indeed, attacks were 33% more frequent during the second half of the moon cycle, when the moon shines the least and provides the most darkness from which the maneaters can strike.
在完全黑暗的条件下，根本无法进行光合作用，但绝大多数光养生物都通过依赖混合营养体的营养循环生存了下来。
No photosynthesis could take place under the complete darkness, but the phototrophs mostly managed to survive based on nutrients cycled by the active mixotrophs.
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