Viferral
吡啶与三氯甲醛聚合物
🗣️ 情景例句
Thanks for all your hospitality.
谢谢你的感情招待。
He is studying the ecology of ameba.
他在研究阿米巴
'A man can never have too many ties.'
“男人有多少领带也不会嫌多。”