常見例句用作形容詞 (adj.)As the plates separate, hot molten mantle material flows up to fill the void.隨著板塊的分開，熾熱的熔融地幔物質曏上流動，以填充空隙。But black upward mobility consists largely of people from poor families moving up.但是黑人在社會堦層上的曏上流動大多都限於擺脫貧睏的狀態(tài)。 返回 flow-up