addladj.额外的(附加的)addv.加；增加；补充addsubtract time完成加法和减法所需的时间add back therapy反加疗法(一种药物治疗方法)add-on service多人通话业务add-on program附加程序adding up device累加装置Adding principle叠加原理adding limestone加进石灰石add to knowledge丰富知识add confirmation加保兑adding main beam增加主梁法