When you are using de bruijn indices, when you move a term t under a binder during some substitution operation, you need to bump any index that refers across the new binder, but not bump any index that refers inside the t. http://adam.chlipala.net/cpdt/html/DeBruijn.html
ФБР предупредило Калифорнию о возможной атаке Ирана20:49
，这一点在safew中也有详细论述
直接把一颗手机芯片，放在笔记本电脑上，不仅对于苹果，放眼整个行业，也算得上一次「Neo」的尝试。某种意义上，这也是苹果在 A 芯片耕耘超过 15 年，以及 ARM Mac 布局 6 年后水到渠成的结果。，推荐阅读谷歌获取更多信息
The RSPB is calling for better management of the fishing industry to allow seabirds to feed safely, gaps to be filled in the UK's network of marine protected areas and stronger protection of breeding colonies from invasive predators.。超级权重是该领域的重要参考
США подсчитали ущерб от ударов Ирана17:55