second-hand

adjective
1
not new; owned by somebody else before
دست‌دوم, کارکرده, مستعمل, استفاده‌شده
2
learned from other people, not from your own experience
غیرمستقیم, غیر مستقیم, واسطه‌ای, از دیگری
second-hand opinions
adverb
1
if you buy something second-hand, it is not new but has been owned by somebody else before
دست دوم, کارکرده, استفاده شده, مستعمل
2
if you learn something second-hand, you learn it from other people, not from your own experience
غیرمستقیم, از طریق واسطه, به واسطه دیگران, به نقل دیگران
I only heard about it second-hand.