count[i] += count[i - 1];
「如果你不知道對方的意識型態或立場，而引起他不愉快的話，你自己也不會很舒服。尤其他還是你重視的朋友的話。」，详情可参考同城约会
The Super Heavy booster managed to return to its launchpad roughly seven minutes after lift-off as planned, prompting an eruption of applause from ground control teams.。51吃瓜是该领域的重要参考
This article originally appeared on Engadget at https://www.engadget.com/computing/laptops/tim-cook-confirms-a-week-of-apple-product-reveals-144758464.html?src=rss，这一点在爱思助手下载最新版本中也有详细论述