All batteries work by converting electrical energy into chemical energy during charging, and then converting it back into electricity as the battery is discharged. 所有電池是靠充電的同時通過將電能轉換為化學能而工作，隨后，當電池放電的時候，再將化學能轉化為電能。
To counter the reduction in thermal efficiency, heat can be recovered from the discharged dried solids. 為了彌補熱效率的降低，熱量可以從排出的干燥固體顆粒中加以回收。
The waste product secreted by the kidneys that in mammals is a yellow to amber-colored,slightly acid fluid discharged from the body through the urethra. 尿，小便哺乳動物由腎臟排泄出的排泄物，顏色為黃色到琥珀色之間，為略含酸性的液體，通過尿道排出體外。