Alternation theory
[医] 更替学说, 格子学说(抗原抗体反应)
🧩 词语组成解析
alternation
[ˌɔ:ltə:'neiʃən]
n. 交替，轮流，间隔;交替工作;更迭;变换;
🗣️ 情景例句
How's Donald?
Donald怎么样？
They are used to seeing him every day.
他们习惯了每天见到他。
Sitting down on a dilapidated wooden fence near the field, we opened a couple of tins of sardines and had a picnic lunch.
我们在田边一堵东倒西歪的篱笆墙上坐下来，打开几听沙丁鱼罐头，吃了一顿野外午餐。