Orthonormalization
规化正交集
🗣️ 情景例句
Now, the ingredients.
现在 ，看看配料。
Misfortune is a good teacher.
不幸是良师。
Often a valley boasted no inn at all, and climbers found shelter wherever they could --
山谷里常常没有小客栈，登山者只好随遇而安。