學個詞 Learn A Word: unknown 未知的，鮮為人知的

今天我們要學的詞是 unknown. Unknown 形容詞，未知的，鮮為人知的。French President Emmanuel Macron appointed a relatively unknown figure, Edouard Philippe, as his new Prime Minister. 法國總統(tǒng)馬克龍任命沒有多少人熟知的愛德華·菲利普出任法國總理。Scientists are baffled by a new mystery space signal from an unknown cosmic source. 一個不知源于宇宙何處的神秘太空信號讓科學家們百思不得其解。好的，我們今天學習的詞是 unknown, unknown, unknown...