R acid
[化] R酸; 2-萘酚-3,6-二磺酸
🧩 词语组成解析
🗣️ 情景例句
Yes, I think I can in ordinary circumstances.
是的，一般情况下，我没有问题。
How long will your offer hold good?
一般你们报盘的有效期是多长？
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。