Live wire:
Someone who is very active and has a lot of energy.
“Live wire” 的字面意思是 “通电的电线”，实际可以用来比喻 “精力充沛、活力四射的人”。
例句
My son is a real live wire – he never sits down!
我儿子精力特别充沛，从来都坐不住！
She’s a live wire – I wish I had her energy to do all the things she does.
她这个人活力四射，真希望我能有她做事的精力。
You’re a live wire – where do you get your energy from?
你总是活力十足，你哪来的那么多精力？
