自得其乐: take delight in doing sth. as a pleasurable occupation; be content with one's lot; derive pleasure from sth.; enjoy oneself; find joy in one's own way; (as) pleased as punch with oneself
跳: 动词1.(腿用力弹起) jump; leap; skip; bounce 短语和例子跳上马背 leap on a horse; 从椅子上跳起来 bounce off [out of] one's chair; 从床上跳下来 spring out of bed; 一跳而起 jump [spring] to one's feet; 跳过一条沟 leap over a ditch
