基本解释n.预清除同根派生 英汉例句The session is done with you and your preclear (pc) seated across from each other. 你和你的待清新者对面而坐来完成听析。to preclear US-bound travellers at their points of departure 在启程地点事先核发赴美旅客的许可证preclearvt. 预先给 ... 核发许可证; 事先批准