ecological

US /ˌi:kəˈlɑ:dʒɪkl/

UK /ˌi:kəˈlɒdʒɪkl/

B1 中級英檢高級
adj.形容詞生態學的
I am very interested in environmental issues, so I took a few ecological classes at the university

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最快樂的國家在哪裡? (What's the Happiest Country?)

02:52最快樂的國家在哪裡? (What's the Happiest Country?)