今天我们要学的词是 unknown. Unknown 形容词，未知的，鲜为人知的。French President Emmanuel Macron appointed a relatively unknown figure, Edouard Philippe, as his new Prime Minister. 法国总统马克龙任命没有多少人熟知的爱德华·菲利普出任法国总理。Scientists are baffled by a new mystery space signal from an unknown cosmic source. 一个不知源于宇宙何处的神秘太空信号让科学家们百思不得其解。好的，我们今天学习的词是 unknown, unknown, unknown...