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

Cut back the cover of the neutral and live wire about one Inch
将带电和不带电的电线头上的包皮割去约一英寸
By god, he's a live wire.
天啊，他可是个碰不得的人。
A barrier of felled or live trees with branches ( sharpened or with barbed wire entwined) toward the enemy.
用树枝做成的路障（这些树枝被削尖了，和带电铁丝网混在一起）以对付敌人。
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
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。
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。
She's a live wire.
她既活泼而又精力充沛。
She got shocked when she touched the live wire.
她在触到通电的电线时受到电击。
Your brother is certainly a live wire, isn't he?
你弟弟的确是个活跃的人，不是吗？
That is a live wire.
那是一根带电的电线。