return (float)rand() / RAND_MAX;
"When areas with fewer resources managed to do it years ago, it's hard to understand why we're waiting until 2027."
increase productivity
Сайт Роскомнадзора атаковали18:00
巴基斯坦向阿富汗宣战，中国称“冲突烈度超过以往”并呼吁尽快停火
· 马琳 · 来源：book资讯