normal eye

例句：

1. 1. The room is quite small, but it's still normal for a hotel room.
   房间很小，但对于酒店房间来说还是正常的。
2. 2. She has a normal height and weight for her age.
   她的年龄身高和体重都很正常。
3. 3. His behavior was completely normal; he had never shown any signs of madness before.
   他的行为完全正常，以前从未表现出任何疯狂的迹象。