有时他们被可耻地忽略了。

At times they have been shamefully neglected.

《柯林斯英汉双解大词典》

“哦，我有时会绝望。”他假装悲伤地说。

"Oh, I despair sometimes," he says in mock sorrow.

《柯林斯英汉双解大词典》

这次事故及时地提醒了人们登山运动有时会多么危险。

The incident served as a timely reminder of just how dangerous mountaineering can be.

《牛津词典》

First of all,notice the obvious point that sometimes people die in their sleep,unexpectedly.

首先，有时人是在睡梦中无预兆地死去。

耶鲁公开课 - 死亡课程节选

and stand hopefully in the sunshine, sometimes in the rain.

会满怀期待地站在烈日里，或者有时在雨中。

莎士比亚环球剧院 - SpeakingMax英语口语达人

So it's OK to not specify. I want to point out, pz whether you're in the p x, the p y, or the p z, unless a question specifically m asks you to specify the m sub l, which occasionally will happen, but if it doesn't happen you just write it like this.

我想指出的是，无论你在px，py或，除非一个问题特别地,让你指出l下面的，这种情况有时会发生，这样就可以了,但是如果它不做要求你们写成。

麻省理工公开课 - 化学原理课程节选