indoor

形容词 indoor:

1. located, suited for, or taking place within a building
2. within doors

1. I never saw an athletic girl that thought she was strong enough to do indoor work.
   我从未见过一个自己认为强健到足以做家务的女运动家。
2. A room or building equipped for indoor sports.
   健身房一个用来进行室内运动的房间或建筑
3. You stay indoors too much.
   你呆在室内的时间太多了。
4. All roams are equipped with electric heaters to keep indoor temperatures constant at15-2.0.
   所有的房间都装备有电炉以保持室内撮氏15－20度的常温。

in.door

adj.（形容词）
Of, situated in, or intended for use in the interior of a building:
室内的：属于或位于建筑物里的，或计划在建筑里使用的：
例句：
an indoor pool; indoor paint.
一个室内游泳池；室内画

Carried on within doors:
户内的：在门里进行的：
例句：
an indoor party; indoor gardening.
户内聚会；户内园艺