And then this drag chute opens up, as it's coming out of the plane and the only purpose for this drag chute is to keep the sonde upright and falling at a correct amount,2,500 feet per minute -- per minute.

接着，这个降落伞就打开了，当它从飞机上出来时，这个拖曳滑槽是为了保持探空仪能直立并以2500英尺/分钟的适合速度下降。