Opr
abbr. operate 操作; operation 操作; operating 操作的; opener 开证人
🗣️ 情景例句
and sometimes just stubborn.
有时候甚至近乎顽固。
Scientists contribute to the well-being of mankind.
科学家为人类造福。
Thus the rods, by falling, and by the direction in which they fell,
木棒倒下的多少和倒下的方向