Welch's stain
[医] 魏尔希氏染剂
🧩 词语组成解析
🗣️ 情景例句
about your math teacher or your math homework.
你的数学老师或你的数学作业。
This country is localed on the continent of Africa.
这个国家位于非洲大陆。
But even when such refinements are not available, there is plenty to keep you occupied.
即使没有这些消遣条件，也总是有事可做。