Ost
abbr. 科学技术局（Office of Science and Technology）
🗣️ 情景例句
Would you mind telling me what the climate is like in California?
您能告诉我加利福尼亚的气候怎么样？
The ox when weariest treads surest.
牛困走得稳。
I have no idea.
我不知道。