Rfl
abbr. 无复发活存（Reiter-Feissinger relapse-free survival）；间苯二酚
🗣️ 情景例句
No problem.
没问题。
That's rather disappointing.
真是让人失望。
Oh! And do you use American or British spelling?
噢！那你们是采用美国拼法还是英国拼法呢？