bottomless pit

剑桥词典

something that seems to have no limits , or a situation that will never end
無底洞；無休止的情形
We'll be pouring money into a bottomless pit if we try to keep that factory open . 如果繼續讓那個工廠運轉下去，我們無異於把錢投入無底洞。 返回 bottomless pit