Seroresistance
血清不应性, 血清效价不变
🗣️ 情景例句
I could almost touch it.
我几乎可以摸到它。
I'm afraid I can't get away from the meeting.
我恐怕难以从会议中抽身。
Economy is one powerful motive for camping, since after the initial outlay upon equipment,
图省钱是露营的一个主要动机，因为除了开始时购置或是租借一套露营装备外，