Some of the very flat-bodied Ediacarans, for instance, lived on sediments and appear to have fed by directly absorbing nutrients by osmosis.
例如，有些埃迪卡拉动物身体非常扁，附着于沉积物上生活，似乎是靠渗透直接吸取养分而活。
2
Any of numerous small, flat-bodied, wingless biting or sucking insects of the orders Mallophaga or Anoplura, many of which are external parasites on various animals, including human beings.