Leukothrombin
白细胞凝血酶
🗣️ 情景例句
The old library building on Chestnut Street,
Chestnut街老图书馆，
Where do you have your lunch?
你在哪儿吃午饭？
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，