Felsen's treatment
[医] 费耳森氏疗法(治痢疾及溃疡性结肠炎)
🧩 词语组成解析
🗣️ 情景例句
She can't sit around and do nothing.
她总不能闲坐着无所事事呀。
Rachel promised to listen for the telephone.
雷切尔答应要守着接听电话。
Six hundred years ago,
600年前，