jump in插话； (踊跃或热切地)加入jumpn.跳跃；跳动；上涨v.跳越；暴涨jumping changes突变jumps and leaps大跳jumping ability弹跳能力jump if greater大于则转移指令jump spark coil跳火线圈jumping balloon跳气球(空中遨游)jump in presure压力突变jumping-point变点jumping project跳跃项目jumps the ranks越级