Rona
abbr. 净资产回报率（return on net assets）
🗣️ 情景例句
He ran the drugstore
他经营药房
When an opportunity is neglected, it never comes back to you.
机不可失，时不再来。
As it was extremely narrow, the man was unable to move,
由于烟囱太窄，那人无法动弹。