Changes

[[Image:RopeandBucketphoto.jpg|thumb|right|200px|Rope and bucket system. Fass Toucouleur, Kaolack Region, Senegal. Photo: 绳子与水桶装置。塞内加尔考拉克地区，法斯•图库勒尔，图片来源： [http://appropriateprojects.com/node/731 Fass Toucouleur Well Improvement Project.（Fass Toucouleur）法斯•图库勒尔水井改善工程]]]

This device is mainly used with hand-dug wells. A bucket on a rope is lowered into the water. When the bucket hits the water it dips and fills, and is pulled up with the rope. The rope may be held by hand, run through a pulley, or wound on a windlass. Sometimes, animal traction is used in combination with a pulley. Improved systems use a rope through a pulley, and two buckets – one on each end of the rope. For water less than 10 m deep, a windlass with a hose running from the bottom of the bucket to a spout at the side of the well can be used. However, the hygiene of this system is poorer, even if the well is protected.这一装置主要与手工挖掘井工具一同使用。将桶系在绳子上降到水中。当桶碰到水的时候会下沉并装满水，再用绳子把它拉上来。绳子可以由手拉动，运用滑轮或绕在绞盘上。有时，畜力牵拉可与滑轮一同使用。改良的装置会将绳子绕过滑轮，再用两只水桶——绳子两端各系一只水桶。对于浅于10米深的水而言，可以使用带有软管的绞盘，软管从水桶底部连到井的出水口。然而， 即使是水井受到保护，这一装置的卫生情况较差。

===Suitable conditions适宜条件===

! width="50%" style="background:#efefef;" | Advantages优势! style="background:#f0f8ff;" | Disadvantages不足