int mid = left + (right - left) / 2; // 防止溢出的中点计算
Consistency: Check your work for inconsistent usage of open and closed quotation marks.
。关于这个话题，im钱包官方下载提供了深入分析
他们警告母亲：此案属于“国家级机密”，正处于关键侦查阶段，绝对不能向任何人泄露，“尤其是你的儿子”。他们声称，告诉自己的儿子只会害了他，而且他也在被监控。
Both of them expressed the importance of "getting out of [their] comfort zone", despite age.