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
When you have nothing to do, time goes slowly.
你没事做时，时间便过得很慢。
He is indifferent to any and everything.
他对任何事都漠不关心。
Last Sunday I got up very late.
上个星期天，我起得很晚。