Opsonin
n. 调理素\\n[化] 调理素
🗣️ 情景例句
I've been trying to find
我一直在寻求
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
I'm certain he'll go to see the film, because he's bought a ticket.
我肯定他会去看电影的，冈为他把票都买好了。