Why reactivity? Notebooks are plagued by hidden state problems. All variables are global and mutable. Moreover, the output you see accompanying a cell depends on the order in which the cells were run. This has two big drawbacks:
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
，这一点在新收录的资料中也有详细论述
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Москвичам назвали срок продолжения оттепели14:39