missing littleknown, rarely known unknown to the public strange, unfamiliar 
unbekannter Aufenthaltsort selten jemand bekannt (Idiom); fast unbekannt obskur und unbekannt (Idiom); eine unbekannte Größe unbekannt 
dove si trova, non si sa dove si trova raramente si conosce qualcuno (idioma); quasi sconosciuto oscuro e sconosciuto (idioma); una quantità sconosciuta sconosciuto 
lieu inconnu personne rarement connue (idiome) ; presque inconnu obscur et inconnu (idiome) ; une quantité inconnue peu familier 
paradero desconocido raramente se conoce a alguien (modismo); casi desconocido oscuro y desconocido (idioma); una cantidad desconocida desconocido missing 8 下落不明 [-] xiàluòbùmíng (whereabouts-not-clear) missing: 那个 孩子已经~一个星期了. The child had been missing for a week. ' littleknown, rarely known 43 鲜为人知 [鮮爲--] xiǎnwéirénzhī (rarely-by-people-known) littleknown, rarely known: ~的景点 (jǐngdiǎn) a little-known scenery spot || ~的 产品 a rarely known product ' unknown to the public 44 默默无闻 [--無聞] mòmò wúwén (silent-reduplication-not-known) unknown to the public: ~的运动员 an unknown athlete || ~地过日子 move along without attracting the public eye ' strange, unfamiliar 26 陌生 [-] mòshēng (strange-unfamiliar) strange, unfamiliar: ~人 strange person || ~的地方 strange place || 感到~ feel strange '
Người xây dựng nhà thờ này không biết. 
The builder of this church is unknown.
Der Erbauer dieser Kirche ist unbekannt.
ผู้สร้างโบสถ์แห่งนี้ไม่เป็นที่รู้จัก
这座教堂的建造者是未知的。