Ost
abbr. 科学技术局（Office of Science and Technology）
🗣️ 情景例句
I like what I do.
我喜欢我所做的工作。
Never say of another what you would not have him hear.
莫说不想让人听见的话。
He has made neat paths and has built a wooden bridge over a pool.
他修筑了一条条整洁的小路，并在一个池塘上架了一座小木桥。