For as long as a forward edge of a worm's ring segment was held open by a hook, open to admit abrasive sand into the more sensitive interior, the creature would not retreat beneath the desert.

只要蠕虫环段的前缘被钩子撑开，让磨蚀性的沙子进入更敏感的内部，这种生物就不会撤退到沙漠下面。