Hydropyrophosphate
焦磷酸氢盐, 酸式焦磷酸盐
🗣️ 情景例句
It's unsafe for girls to go out alone at night.
女孩子晚上一个人外出很危险的。
Her name has slipped from my mind.
我想不起她的名字了。
It's a pen.
一支钢笔。