cede:recede退去;precede先于;accede同意;concede退让.antecede先于pel: repel击退; compel强迫;propel推进;dispel驱散;expel驱逐pend: depend依靠;spend花费;suspend吊;independ独立;expend花费clude: include包括;conclude结束;exclude拒绝;preclude阻止sist: assist(V)帮助; resist(V)抵抗; insist(V)坚持认为; consist(V)由。。。组成; persist(V)坚持