Examples of 'it is not known how' in a sentence

Meaning of "it is not known how"

This phrase indicates that the method or process by which something happens or is achieved is unclear or uncertain. It implies that there is a certain level of mystery or lack of understanding surrounding the specific details or mechanisms involved

How to use "it is not known how" in a sentence

Basic
Advanced
it is not known how
To this day it is not known how dangerous it is.
The station will remain in its orbit It is not known how long.
It is not known how new cardiomyocytes are made.
He had children but it is not known how many.
It is not known how or when she died.
No one was hurt and it is not known how much cash was taken.
It is not known how he arrived at these numbers.
The researchers say that it is not known how the cancer comes back.
It is not known how this virus is transmitted.
He studied medicine, but it is not known how.
It is not known how long he resided there.
Many are not, but it is not known how many and why.
It is not known how he left the show.
Their arrowheads hit its body, but it is not known how many were fired.
It is not known how the infants died.
American Revolution, although it is not known how many.
It is not known how many cars were made.
Given its reference in the prophecy, it is not known how Annex got it.
It is not known how many shots were fired.
Although 10 were originally operated, it is not known how many are currently in service.
It is not known how many have been built.
However, at this time, it is not known how easily the virus spreads.
It is not known how or where they were sold.
They had 96 grandchildren, and it is not known how many other descendants.
It is not known how the school was rebuilt.
Many of Hals ' works have disappeared, but it is not known how many.
It is not known how many were actually made.
We all walk under God, and it is not known how life will turn!
It is not known how he became the secretary.
Cats started to dominate Enoshima around 1980 and it is not known how.
It is not known how many episodes were produced.
At this time it is not known how the store was damaged.
It is not known how many machines were produced.
This is because it is not known how the medicine will affect them.
It is not known how or at what point he was resurrected.
This is because it is not known how metreleptin will affect your unborn baby.
It is not known how common this condition is.
This is because it is not known how this medicine will affect the baby.
It is not known how commonly they occur.
Serious side effects It is not known how frequently these side effects occur.
It is not known how people get on them.
Nevertheless, it is not known how reliable these estimates are.
It is not known how many will be selected.
Not known, it is not known how often these happen.
It is not known how common this syndrome is.
At the moment, it is not known how to prevent injecting drug use.
It is not known how this name was chosen.
For the time being, it is not known how much the production will cost.
It is not known how old he was at the time.
Approaching . It is not known how long the cold will last.

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Examples of using How
I do not know how to deal with this
How would you feel about that
We wondered how to unload this one piece
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Examples of using Known
I would known they turned themselves around
It uses none of the known building blocks
Known details concerning voyage and crew
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Examples of using Not
I am not really sure what that thing was
Use where walls are not perpendicular to base
I am not saying that you do not care
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