Lagrange's identity
[计] 拉格朗日恒等式
🧩 词语组成解析
identity
[ai'dentiti]
n. 身份;[逻]同一性;个性;[数]恒等（式）;
🗣️ 情景例句
Alright. Please sit down.
好的，请坐下。
Thank you.
谢谢您。
How do they come packaged?
货是怎样装的呢？