載入中... 相關課程 Back concern [kən`sɝn] n. [C, U] 擔心(的事);憂慮 相關課程 0 / 750 登入觀看 ⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles. concern [kən`sɝn] n. [C, U] 擔心(的事);憂慮 上傳學習單 下載學習單