Pkf
[医][=phagocytosis and killing function]吞噬和杀伤功能
🗣️ 情景例句
Reading childern's literature is an excellent way for the beginning English speaker to improve.
对于刚刚开始学说英语的人，阅读儿童文学读物是个不错的方法。
I worked at the restaurant this morning.
我今早在餐厅工作。
Jim, is this yours?
吉姆，这是你的衬衫吗？