dry cell

名词 dry cell:

1. a small Leclanche cell containing no free liquid; the electrolyte is a paste and the negative zinc pole forms the container of the cell; used in flashlights, portable radios, etc.

1. The difference in the electrical condition of the terminals "+" and "-" of the dry cell which tends to make electricity flow we describe as a difference of electrical potential.
   电(子)之所以流动，是因为干电池上正负两端上的电的状况有差别所致，对于这种差别，我们称之为“电位差”。
2. I have to buy a new dry cell.
   我必须买一节新的干电池了。