youdao

Most torches work on two batteries.

大多数电筒要用两节电池。

youdao

This pocket calculator needs two batteries.

这个袖珍计算器需用两节乾电池。

youdao

"The two batteries are feeding power to the controller and then to my chest,".

VOA: standard.2010.01.27

"The power source for the aircraft are the two battery packs you see on either side, which are lithium ion batteries which are similar to what you find in our laptops, only custom made for us for this application."

VOA: standard.2010.08.11

After the airstrikes overnight, Israel's military on Saturday deployed two batteries of its Iron Dome rocket defense system to the country's north.

NPR: Israeli Warplanes Strike Syria In Escalation

One of the aircraft's two batteries was replaced in October after it failed to start the jet's engines, the battery's primary function.

WSJ: FAA Grounds U.S. Boeing 787 Dreamliner Flights

The plane also uses two batteries in parallel where Boeing uses one, reducing the power that each one stores and discharges, Airbus officials said.

WSJ: Dreamliner-Like Batteries Raised Concerns