В Финляндии предупредили об опасном шаге ЕС против России09:28
▲ 图源：9To5Google。关于这个话题，同城约会提供了深入分析
Each puzzle features 16 words and each grouping of words is split into four categories. These sets could comprise of anything from book titles, software, country names, etc. Even though multiple words will seem like they fit together, there's only one correct answer.，这一点在搜狗输入法下载中也有详细论述
有前款第一项行为，在成熟前自行铲除的，不予处罚。。Line官方版本下载对此有专业解读
* @param arr 待排序数组