"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"
secondhand是什么意思
secondly是什么意思
secrecy是什么意思
secreta是什么意思
secretaire是什么意思
secretarial是什么意思
secretariat是什么意思
secretary是什么意思
secretaryship是什么意思
secrete是什么意思