second-hand
(adj.)二手的
secondhand
adj 1: derived from what is primary or original; not firsthand; "a
secondhand report"; "a secondhand account of a memory
of something once read"; "most of our knowledge is
secondhand"
2: previously used or owned by another; "bought a secondhand
(or used) car" [syn: used]
adv : by indirect means; "I heard about it only secondhand or
thirdhand"; "he prefers to buy secondhand"