n.

1. 引入口；通風口；(水/空氣等的)入口
2. 吸收；攝取

n.

1. an amount, quantity, or group taken in.
   ▸an act or the action of taking someone or something in.
2. a place or structure through which something is taken in.
3. N. English land reclaimed from a moor or common.