本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。
Дания захотела отказать в убежище украинцам призывного возраста09:44
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In December, the Environment Agency estimated that by 2050 one in four properties would be at risk from flooding. This is the first time the EA has considered how a warmer climate could affect flooding in the UK.
int key = arr[i]; // 待插入的元素