劍橋詞典something that seems to have no limits , or a situation that will never end 無(wú)底洞；無(wú)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(xù)讓那個(gè)工廠運(yùn)轉(zhuǎn)下去，我們無(wú)異于把錢(qián)投入無(wú)底洞。 返回 bottomless pit