Ost
abbr. 科学技术局（Office of Science and Technology）
🗣️ 情景例句
I've got it.
我都记下了。
Pride must be pinched.
骄傲必须收敛。
There are four seasons in the year here--spring, summer, autumn and winter.
这儿一年有四季--春、夏、秋、冬。