Parsing: Tokens → Surface AST
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full，详情可参考搜狗输入法2026
，更多细节参见体育直播
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(assert (str.in.re w2 re))