这条街上，我们设计了五大“主题”场景，等你来体验：
‘K패트리엇’ 천궁-Ⅱ, 이란 미사일 잡았다…UAE서 첫 실전 투입
\[l_i(x)=\frac{l'_i(x)}{l'_i(x_i)}=\prod_{\substack{0\leq j \leq n \\ j \neq i}}\frac{x-x_j}{x_i-x_j}\]，这一点在91视频中也有详细论述
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