Instead of being sucked downward into the spiral of desertification, they have kick-started a new, virtuous cycle of life.
这些土地不仅没有被吞进沙漠化的漩涡中，反倒摇身一变成全了一段新生命的良性循环。
During, or at the end of the arm pull-down of the first stroke after the start and after each turn, a single downward butterfly kick is allowed, but not required, followed by a breaststroke kick.
出发后或每一次转身之后，在第一次大划手之当时或之后，一次向下蝶式踢腿是被允许的(非必要的)然后拌随一次蛙式踢腿。
This time as you rotate to left side skate (left arm extended), simultaneously kick downward with your right leg as a flick.
这一次在转动到左边的时候，同时打右侧的腿。
It is not permissible to take only a downward butterfly kick without then taking a normal breaststroke kick.
如果单施行一次向下蝶式踢腿，然后没有做一次正常蛙式踢腿，是不被允许的。
A swimming stroke in which a person swims on one side and thrusts the arms forward and downward alternately while performing a scissors kick.
一种游泳姿势，游泳者侧身向前游，胳膊交替向前、向下划水，同时进行两腿交叉蹬出。
A swimming stroke in which a person swims on one side and thrusts the arms forward and downward alternately while performing a scissors kick.
一种游泳姿势，游泳者侧身向前游，胳膊交替向前、向下划水，同时进行两腿交叉蹬出。
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