n.口膠
The flatworms have flattened bodies and look more like chewing gum as they forage for food on the rocks. 當(dāng)他們?cè)趲r石上為食喂的時(shí)候，扁形蟲(chóng)已經(jīng)將身體變平而且看起來(lái)更像口膠。
