Sibi
abbr. Smithsonian Institution Bibliographic Information Service 史密森著书目录信息服务会学会
🗣️ 情景例句
You seem to have some reservations.
看起来你还有些犹豫。
Knowledge is power.
知识就是力量。
Mum, this is my teacher, Miss Gao.
妈妈，这位是我的老师，高小姐。