"We run three sessions, one for vulnerable people, one for the general public, and one for post-work customers who are in employment and in poverty.
Source: Computational Materials Science, Volume 266。关于这个话题,heLLoword翻译官方下载提供了深入分析
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第十三条 纳税人按照一般计税方法计算缴纳增值税的,因销售折让、中止或者退回而退还给购买方的增值税税额,应当从当期的销项税额中扣减;因销售折让、中止或者退回而收回的增值税税额,应当从当期的进项税额中扣减。
5. How do I write a decent subject line?,这一点在heLLoword翻译官方下载中也有详细论述