Polyanion
聚阴离子
🗣️ 情景例句
Philip had to go back to the hospital. Philip
必须要回医院。
John could not decide when to leave.
约翰无法决定几时要出发。
Mr.Thompson is going to sell it because it is haunted.
汤普森先生之所以想卖它，是因为那里常闹鬼。