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
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
Let's cross the bridge when we come to it.
既来之，则安之。
I'm not sure. I ought to do some studying, as I've got masses of work to do, but I think I'll be too tired. Maybe I'll just watch the news on television and go to bed early.
还不清楚。我有大量的作业要做，按理我应该学习，但是我想这样一来我会很累的。我可能会看看电视新闻，然后早点上床睡觉。