他吃起东西来肚子像个无底洞。He's a bottomless pit as far as food is concerned.战争把许多青年男子吞进了它的无底洞.The war swallowed up many young men into its maw.嘴是无底洞.If it were not for the belly , the back might wear gold....
If you lie upon roses when young, you'll lie upon thorns when old.年青时躺在玫瑰上，老年时就会躺在荆棘上。Roses will always have thorns but with care they can be avoided.玫瑰花上都有刺，不过只要小心就碰不到。No pain, no palm; no thorns, no throne; no gal...