B. e.
[医] 结核菌乳剂
🧩 词语组成解析
[医] 电子\\n[经] 东
🗣️ 情景例句
We will also need a letter of recommendation.
我们还要求一封推荐函。
It's time to begin.
到开始的时候了。
They were in fashion last year and the year before last.But they're not in fashion this year.
这鞋在去年和前年时兴，而今年已不流行了。