live wire

英 [lɪv ˈwaɪə(r)]

美 [lɪv ˈwaɪər]

n. 精力充沛之人; 生龙活虎之人

柯林斯词典

精力充沛之人；生龙活虎之人
If you describe someone as alive wire, you mean that they are lively and energetic.

noun

She seems to have inexhaustible energy.; She's a live wire.
她仿佛有使不完的劲。
It's dangerous to touch a live wire.
触摸带电的电线是最危险的。
Tommy's a real live wire, so we had difficulty in keeping him quiet when we took him to a concert.
汤姆实在是太好动了，所以我们带他去听音乐会时要让他安静下来是很难的。
Two live wire contacting points on the sliding plate are in flat form, which reduces resistance force when the bulb is screwed, and the bulb is uneasy to be damaged.
滑动板上的两个火线触点为平面形的，使拧装灯泡时阻力小不易损坏；
Detector for the Reinforcing Steel Bar, Metal Water Pipe and Live Wire in the Wall
墙体中钢筋、金属水管、电线探测器
This week a man was admitted to hospital in northern England after being electrocuted cutting through a live wire carrying 11,000 volts trying to steal the copper it contained.
上周，英格兰北部一名男子为了窃取电线中的铜，试图切断一条1.1万伏的高压电线，因此触电住进了医院。
The Application of the Live-wire Cleaning to the Telecommunication Equipments
带电清洗在电讯设备中的应用
By god, he's a live wire.
天啊，他可是个碰不得的人。
Your brother is certainly a live wire, isn't he?
你弟弟的确是个活跃的人，不是吗？
Wendy is the real live wire of the department who motivates all the others.
温迪是这个部门的活跃分子，对其他人很有激发力。