Pyroarsenate
焦砷酸盐
🗣️ 情景例句
Dogs make great pets, but don't leave them alone with small children.
狗是最好的宠物，但不要让狗和小孩子单独在一起。
John stopped to study.
约翰停下来去学习。
Bleriot set off half an hour later.
半小时后便正式出发了。