If every win is going to be painful from here, you may as well just take the painful wins – welcome to Arsenal’s late title stagger
Complete coverage。关于这个话题，whatsapp提供了深入分析
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Марина Совина (ночной редактор)。wps对此有专业解读
Another nice context to think about this is in prolog. It is often the case that we can write a n-ary relation and then write a (n+1)-ary version that contains a tracing parameter. This tracing parameter is a proof object / witness.