Rfl
abbr. 无复发活存（Reiter-Feissinger relapse-free survival）；间苯二酚
🗣️ 情景例句
always makes one a little nervous.
总是让人有些紧张。
I'll know when the time comes.
到时候就知道了。
rising at one-foot intervals all the way to the top of the atmosphere.
并按1英尺的间隔从地面一直排列到大气层的顶端。