Mack knew this passage by heart.
麦克会背这一段。
Shackleton wanted to force a passage by dog sled to cross the continent.
沙克尔顿想用狗拉雪橇开出一条通道来通过这块陆地。
These researchers also claim that improvements of memory overnight can be explained by the mere passage of time, rather than attributed to sleep.
这些研究人员还声称,一夜之间记忆力的改善可以用时间的推移来解释,而不是归因于睡眠。