adj.可論證的;顯而易見的
Is there a demonstrable need for the project? 能否證明項目有必要進行?
It has achieved demonstrable results, but not yet enough. 它已取得了顯著成效,但還遠遠不夠。
In contrast, most cases in children have no demonstrable cause. 相反,大多小孩的病例沒有明顯的原因。