On cold winter days we can stay warm with battery-operated gloves and socks, and specially made coats and jackets.
在寒冷的冬天，我们可以用电池供电的手套和袜子和特殊设计的外套夹克来保暖。
2
They run on battery-operated (用电池发动的) motors.
它们靠电池马达运行。
3
Stacked near the checkout counters, and as colorful as a Fisher-Price toy, it is a not-so-serious-looking power tool: a battery-operated saw-and-drill combination.