首先，它们使我们呼吸的空气更清新。
因为我喜欢在运动的同时能呼吸到大自然的清新空气，这样更健康，更有益。
Because I wish I can respire the natural fresh air during exercise, which is more health and benefit to my body.
城市居民从城市搬到农村以享受更广阔的空间和呼吸更清新的空气。
Urban citizens remove from the city to the countryside for wider space and fresher air.
应用推荐