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

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。
Your brother is certainly a live wire, isn't he?
你弟弟的确是个活跃的人，不是吗？
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。
She's a live wire.
她既活泼而又精力充沛。
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。
That is a live wire.
那是一根带电的电线。
The Application of the Live-wire Cleaning to the Telecommunication Equipments
带电清洗在电讯设备中的应用
If you touch a live wire you will get a shock.
如果你摸带电的电线，就会触电。
She got shocked when she touched the live wire.
她在触到通电的电线时受到电击。
It's dangerous to touch a live wire.
触摸带电的电线是最危险的。