Biopolymerization
生物聚合
🗣️ 情景例句
She doesn't have the phone number.
她不知道那儿的电话号码。
Everything is good when new, but friend when old.
东西新的好，朋友老的好。
Hi, Carol!Where's Tom?
你好，卡罗尔！汤姆在哪儿？