Previously, the purpose of this stage was unclear, but the new results offer evidence as to why humans spend at least half their sleeping hours in stage 2, non-REM, Prof Walker said.

沃克教授说，以前，这个阶段的目的不明确，但是，新的研究结果提供了证据，说明为什么人类在无快速眼动的第二阶段至少要用半个小时的睡眠时间。

youdao

Previously, the purpose of this stage was unclear, but the new results offer evidence as to why humans spend at least half their sleeping hours in stage 2, non-REM, Prof Walker said.

沃克教授说，以前，这个阶段的目的不明确，但是，新的研究结果提供了证据，说明为什么人类在无快速眼动的第二阶段至少要用半个小时的睡眠时间。

youdao