Ost
abbr. 科学技术局（Office of Science and Technology）
🗣️ 情景例句
Me?
我？
John's parents will rejoice at his safe return.
约翰的双亲会因他的安然归来而惊喜万分。
He sat with his arms across the chest.
他双臂交叉于胸前的坐在那里。