Orr
abbr. 整体反应率（The Overall Response Rate）；氧还原反应（Oxygen Reduction Reaction）
🗣️ 情景例句
Cooking dinner for the entire family is not so easy.
给全家人做晚餐真不是件容易的事。
All right.
行。
People said gold could easily be picked up by washing sand from the river in a pan of water.
据说，在一盆水里淘洗可沙就很容易找到金子。