All batteries work by converting electrical energy into chemical energy during charging, and then converting it back into electricity as the battery is discharged. 所有电池是靠充电的同时通过将电能转换为化学能而工作，随后，当电池放电的时候，再将化学能转化为电能。
To counter the reduction in thermal efficiency, heat can be recovered from the discharged dried solids. 为了弥补热效率的降低，热量可以从排出的干燥固体颗粒中加以回收。
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，小便哺乳动物由肾脏排泄出的排泄物，颜色为黄色到琥珀色之间，为略含酸性的液体，通过尿道排出体外。
