both mature and young soils

例句：

1. 1. Both the boysand the girls are in the room.
   两个男孩和两个女孩都在房间里。
2. 2. Both sideshave made concessions to reach acompromise.
   双方都做出了让步以达成妥协。
3. 3. Bothof them are very good at math.
   他们俩数学都很好。