Examples of 'have been underground' in a sentence

Meaning of "have been underground"

have been underground - This phrase typically refers to someone or something that has been operating secretly or out of sight for some time. It can imply a hidden or secretive nature

How to use "have been underground" in a sentence

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have been underground
They have been underground for six months.
Does it mean that all this time we have been underground?
You have been underground a century and a half.
The speleothems are supposed to be particularly unusual. They have been underground for six months.
Some of them have been underground for years.
You entered the U.S. five months ago and you have been underground since.
They have been underground since the war.
How could you let this happen? You mean we have been underground this whole time?
They have been underground for several hours.
Five months ago S. and you have been underground since.
You have been underground for decades.
Of course I want the job . I have been underground long enough.
I have been underground long enough.
Oh, I would say those bones have been underground 13 years at the most.
We have been underground since the day the Taelons arrived.

See also

As though we have been underground forever.
You have been underground for months, and you chose to resurface.
I could have been underground.
I have been underground long enough . I need some air.
You mean we have been underground this whole time?
I have been underground for 13 years and you want me to open with a maniacal laugh?
But why? You have been underground for decades.
We have been underground enough, we need to come out!
See, we have been underground too long.
You have been underground a long time, Madam Coin.
The Blarg have been underground for over 50 years.
We have been underground for how long?
These men have been underground for 68 days.
So we have been underground all this time? Wait.
See, we have been underground too long. Our woman can't get pregnant.
Well, I have been underground a long time, Caine.

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Examples of using Underground
Rendering the underground ventilation ducts secure
Wastes may be disposed of in surface heaps or underground
Cameras for security in underground parking garages
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Examples of using Have
These documents have been in my family for centuries
Have this done by the customer service only
He could not have chosen a worse time
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