It was going on (for) midnight.

快半夜了。

《牛津词典》

It was going on almost a year.

他们在一起快一年了。

youdao

They knew that discrimination was going on, but chose to ignore it.

他们知道歧视仍然存在，但他们情愿不去理会。

《柯林斯英汉双解大词典》

It was an experience that began with a few simple words: "I am going around the world on a motorcycle."

VOA: special.2009.01.14

We had no idea what was going on with the system, with how people were using it. We were making guesses.

我们不知道这个系统会怎么样，也不知道人们用得怎么样，我们只是在猜测。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

And they didn't put their explanation of what they thought was going on, it just sort of was observing what they saw.

而且他们并没有给出解释,而是仅仅介绍了他们所观测到的内容。

麻省理工公开课 - 化学原理课程节选

"I knew it was going on, but I didn't make it my business, " he says.

FORBES: Can You Believe Those Revenues?

"It was going on for years, " Mr. King said.

WSJ: Former Rep. Weiner's Record Includes Many Causes But Few Bills

Such proof, say these experienced prosecutors, does not consist of the testimony of friends and associates of Miss Lewinsky, who tell the FBI that Ms. Lewinsky contemporaneously told them about the activity at the time it was going on.

CNN