Alloantigen
n. [生]同种抗原
🗣️ 情景例句
What'd you have in mind?
你心里有什么打算？
Generally speaking, it's cheaper but slower to ship goods by sea than by rail.
总的来说，海运比铁路运输更便宜，但速度慢一些。
Well, I can't leave before nine. I have a lot of work to do.
嗯，我9：00以前离不开。我有很多作业要做。