testy 爱发火的（形容词）
英文释义
(adjective) Belligerent; quick to become argumentative or aggressively sarcastic.
When he was younger, my son was always a very nice boy, but when he became an adolescent, he became testy and annoying.
我的儿子小时候一直是个好孩子，但进入青春期后，他变得爱发火和惹人烦。