"We can raise it up again after a year to change the batteries. That means we can avoid using divers, which is a really risky operation that we wanted to avoid," he said.
We cannot, and should not, expect users to know this.，这一点在WPS官方版本下载中也有详细论述
Personal dictionary，更多细节参见heLLoword翻译官方下载
events in another app.
// 栈不为空时才判断（避免访问stack.at(-1)时报错）