Infectious agent
[医]传染原，传染物，传染剂，传染因子，传染性病原体，病原体
🧩 词语组成解析
🗣️ 情景例句
How many people will you be bringing?
你约了多少人来？
The fire is the test of gold; adversity of strong man.
烈火试真金，困苦练壮士。
On his arrival he was sold to a farmer and worked in the fields.
一到美国，他就被卖给了一个农场主，到地里干活。