Theorems
n. （尤指数学）定理( theorem的复数形式 ); 命题; 原理; 原则
🗣️ 情景例句
A friend in need is a friend indeed.
患难朋友才是真正的朋友。
Is anybody home?
有人在家吗？
Did she learn all by herself? How clever.
她全是自己学会的吗？多么聪明啊！