Osy
abbr. optimum sustainable yield 最適宜可持續產量
??? 情景例句
Alexandra and the Molinas sent them for Max.
那是Alexandra和 Molina全家送給Max的。
We tried in vain to make him change his mind.
我們試圖使他改變他的主意，但白費力氣。
How time files! More than a week has passed already!
光陰似箭！已經過了一周多時間了！