Daily Vocabulary(2022/04/01）

28441.double-A (単三の）
This toy needs two double-A batteries. 
28442.Jam(紙詰まり） a situation in which a machine does not work because something is stopping a part from moving
YCould you help me fix this paper jam? 
28443.ream(連、多量の ）to happen or develop in a particular way
There's a ream of A4 paper in my bottom desk drawer. 

28444.double-sided(両面で）something such as tape or paper that is double-sided has something on both surfaces 

Can this printer print double-sided？
28445.date back to(～に遡る）to have existed since a particular time in the past
Nigirizushi dates back to the Edo period.