Bicyclic trisulfone
[化] 二环三砜
🧩 词语组成解析
a. 两个轮子的, 二环的, 两圈的\\n[机] 二环的
🗣️ 情景例句
How's Donald?
Donald怎么样？
She began playing the violin when she was nine.
她从九岁就开始练习小提琴。
As long ago as the fourteenth century,
早在14世纪，