To give some detail, it’s /var that is writable, and mutable directories will have symbolic links pointing to subdirectories of /var:
与此同时，研发投入在千万元及以上区间的企业数量，已经连续五年保持两位数的增长，反映出更多企业正在系统化、规模化地投入研发活动。，更多细节参见heLLoword翻译官方下载
Nature, Published online: 24 February 2026; doi:10.1038/d41586-026-00517-9，这一点在WPS官方版本下载中也有详细论述
纳税人适用免征增值税的出口业务，可以放弃免征增值税，选择缴纳增值税，自放弃免征增值税之日次月起，适用免征增值税的出口业务按规定缴纳增值税。
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