Osy
abbr. optimum sustainable yield 最适宜可持续产量
🗣️ 情景例句
I promised you a surprise, didn't I?
我答应过要给你一件惊喜， 不是吗？
I want to take this opportunity to thank them all.
我想借这个机会向他们表示感谢。
What invariably happens is that a great number of things choose to go wrong at precisely the same moment.
情况经常是这样的，许许多多的事情都偏偏赶在同一时刻出问题，