第三十九条 增值税法第二十八条第一款第一项所称收讫销售款项，是指纳税人发生应税交易过程中或者完成后收到款项；取得销售款项索取凭据的当日，是指书面合同确定的付款日期，未签订书面合同或者书面合同未确定付款日期的，是指应税交易完成的当日，即货物发出、服务完成、金融商品所有权转移、无形资产转让完成或者不动产转让完成的当日。
This kind of scenario-based demo reduces return rates on the one hand, and strengthens emotional attachment on the other.，详情可参考PDF资料
Mat Smith for Engadget。关于这个话题，51吃瓜提供了深入分析
Apple is launching updated MacBook Pros with new M5 Pro and M5 Max chips and double the starting storage, the company announced Tuesday. The new models will be available for preorder starting Wednesday (March 4) and start shipping March 11; stay tuned for links to their listings on the Apple Store and third-party retailers.，更多细节参见纸飞机官网
2Bill Hall, creator of the Odin programming language.