应急设施必须随着情况改善予以逐步改进或以简易坑式厕所、通风改良坑式厕所或节水型水冲式厕所予以替代。
Emergency facilities need to be progressively improved or replaced with simple pit latrines, ventilated improved pit latrines, or poor-flush latrines as the situation develops.
通风道，换气坑空气流通的通道，如使矿井。
A passageway or shaft in which air circulates, as in ventilating a mine.
像坑帮助通风拉链掉多余的热量和你保持舒适在任何活动。
Like pit zips to help ventilate off excess heat and keep you comfortable during any activity.
像坑帮助通风拉链掉多余的热量和你保持舒适在任何活动。
Like pit zips to help ventilate off excess heat and keep you comfortable during any activity.
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