Language subtag lookup app
https://r12a.github.io/app-subtags/
查詢、驗證 IEFT 語言標籤（BCP 47 ）的工具
原始碼： https://github.com/r12a/r12a.github.io/tree/master/apps/subtags
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Language subtag lookup app
https://r12a.github.io/app-subtags/
查詢、驗證 IEFT 語言標籤（BCP 47 ）的工具
原始碼： https://github.com/r12a/r12a.github.io/tree/master/apps/subtags