secondlyadv.第二;其次
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondhand jar回收玻璃罐
secondhand shopn.旧货店
secondhand smoke被动吸入的烟
"a secondhand report"
"a secondhand account of a memory of something once read"
"most of our knowledge is secondhand"
"bought a secondhand (or used) car"
"I heard about it only secondhand or thirdhand"
"he prefers to buy secondhand"