Leukothrombin
白细胞凝血酶
🗣️ 情景例句
Philip, I took Michelle to a school play
Philip,我带Michelle看过学校演出的
One of my suitcases is small,and the other one is medium size.
我的一个提包是小的，另一个是中等的尺寸。
Education is one of the key words of our time.
教育是我们这个时代的关键词之一。