"手书"是个多义词，它可以指手书（词语）,手书（黄汐源演唱歌曲）。
他们卖二手书，参加才艺表演，甚至挨家挨户地去寻求捐款。
They sold their second hand books, put on talent shows and asked for donations (捐赠) , even going door to door for them.
网上二手书平台的兴起和想法分享也促进了图书回收的蓬勃发展。
The rise of online second hand book platforms and sharing ideas also contributed to the booming book recycling.
2018年，在线平台 Deja Vu 卖出了200万本二手书。
Two million used books were sold on the online platform Deja Vu in 2018.
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