in
door
1
室内的, 户内的
(of a place, space, etc.) situated inside a building, house, etc.
- The indoor pool at the gym provides a convenient option for swimming regardless of the weather outside.
健身房的室内泳池提供了一个方便的游泳选择，无论外面的天气如何。
- Indoor basketball courts offer a controlled environment for players to practice and compete.
室内篮球场为球员提供了一个可以练习和比赛的受控环境。
- Indoor rock climbing gyms simulate natural rock formations for climbers to practice their skills.
室内攀岩馆模拟自然岩石形态，供攀岩者练习他们的技能。
- The indoor skating rink is a popular destination for families to enjoy ice skating during the winter months.
室内滑冰场是家庭在冬季享受滑冰的热门去处。
反义词：
2
室内的, 户内的
(of sports, activities, etc.) taking place within a building or enclosed space
- The gym offers a variety of indoor sports, including basketball and volleyball.
健身房提供各种室内运动，包括篮球和排球。
- They prefer indoor workouts, such as yoga and aerobics, especially during cold weather.
他们更喜欢室内锻炼，比如瑜伽和有氧运动，尤其是在寒冷的天气里。
- They planned indoor games for the kids' party in case of bad weather.
他们为孩子们的派对计划了室内游戏以防天气不好。
- She prefers indoor cycling over outdoor biking when it's cold outside.
当外面冷的时候，她更喜欢室内骑行而不是户外骑行。
- Indoor events like conferences and workshops are ideal for winter months.
会议和研讨会等室内活动非常适合冬季月份。
3
室内的, 户内的
intended to exist or be used inside a building
- They bought indoor plants that thrive in low light and room temperatures.
他们买了在弱光和室温下茁壮成长的室内植物。
- She prefers using indoor slippers that keep her feet warm on hardwood floors.
她更喜欢使用室内拖鞋，这样在木地板上可以保持脚部温暖。
- He installed an indoor security camera to monitor the front entrance.
他安装了一个室内安全摄像头来监控前门。
- Many people choose small dogs as indoor pets due to their low exercise requirements.
许多人选择小型犬作为室内宠物，因为它们对运动的需求较低。
- Rabbits can make great indoor pets if they have enough space to roam indoors.
如果兔子有足够的空间在室内活动，它们可以成为很棒的室内宠物。