to provide a place where someone or something is protected, especially from the weather or from danger Collins was arrested for sheltering enemy soldiers. shelter sb/sth from sb/sth Plant herbs next to a wall to shelter them from the wind.
to stay in or under a place where you are protected from the weather or from danger shelter from We sat in the shade, sheltering from the sun.
我也Google到原句。不过更重要的是,The Columbia Guide to Standard American English 中说道:
up until is a compound preposition that means the same as until, as in We can stay until [up until] Thursday. Limit it to Conversational and Informal and Semiformal use, until by itself is more appropriate in most Edited English.