Kera
abbr. keratinase 角蛋白酶
🗣️ 情景例句
I've been busy all day.
我今天一整天都非常忙。
Between two stools one goes the ground.
脚踩两只船，早晚要落水。
After having spent whole mornings on the river, I always go home with an empty bag.
我总是在河上呆上整整一上午，然后空着袋子回家。