Is it correct?How to express “地道”?

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authentic? -心存善念- 给 心存善念 发送悄悄话 (0 bytes) () 12/31/2021 postreply 10:21:41

Should it be "native proficiency"? Just as many teachers introdu -妖妖灵- 给 妖妖灵 发送悄悄话 妖妖灵 的博客首页 (0 bytes) () 12/31/2021 postreply 15:24:33

introduce their language level? -妖妖灵- 给 妖妖灵 发送悄悄话 妖妖灵 的博客首页 (0 bytes) () 12/31/2021 postreply 15:25:12

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