Qr
[计] 商, 二次余数
📖 牛津释义
qr
abbr 缩写 = quarter(s).
🗣️ 情景例句
and it is on a half-acre lot.
用地半英亩。
When an opportunity is neglected,it never comes back to you.
机不可失，时不再来；机会一过，永不再来。
Who is he?
他是谁？