fronto额枕皮质frontn.正面；前面；前线；【气象学】锋vt.朝向；面对；对付vi.面朝；掩护adj.前面的front cutaway分腿切环下front cushion前缓冲器front harbour外港front gearbox前减速器front support俯撑front quarter前乳房front outline正视图； 前视图,垂直投影front dumping前端翻卸front trigger前扳机Front Mission前线任务

1. He danced on his hind legs,then on his front legs.
   它先是用后腿跳着舞步，而后用前腿。
2. Each hind leg moves in the path of the foreleg on the same side.
   每条后腿都按照同侧前腿的路线运动。