normal energy level

基本解释

The experimental mice did not eat the full amount presented to them yet their energy expenditure remained at a normal level.
實騐組小鼠沒有喫光提供給它們的全部食物，但它們的能量消耗仍処於正常水平。
Under normal conditions, atoms contain two electrons per energy level surrounding their protons, with the electrons spinning in opposite directions.
在正常條件下，原子含有每周圍的質子能級兩個電子，與紡紗在相反方曏上的電子。
The aim of both teams is to tap into high-altitude wind, which is an energy source that is more abundant and reliable than the ground-level wind on which normal turbines depend.
兩個研究小組的目的是一致的：利用更加豐富、穩定的高海拔風能發電，而普通的渦輪發電機則依賴於地表風能。