比较级： more safely
最高级： most safely

Getting rid of it safely is thus a problem .

因此，安全地处理它已经是个大难题。

So how long can people safely go without snoozing ?

那么人们多长时间不睡觉是安全的呢？

But the policy could not safely endure throughout a two-term presidency .

但这一政策不可能安然度过两任总统任期。

I think we can safely assume that once a soul gets to hell , it does not leave .

我觉得我们可以稳妥地估计一旦灵魂下了地狱，他就出不来了。

It firms , for example , can safely assume that computers will keep getting faster .

例如，it公司能够很有把握地预测计算机的速度会变得越来越快。