When an adjective is used in structure “ in length “ as is the case with sentence below, does it change it's meaning ?
We can cut lumbers into 5 meters in longest length .
If this sentence are wrong ,please correct me .
When an adjective is used in structure “ in length “ as is the case with sentence below, does it change it's meaning ?
We can cut lumbers into 5 meters in longest length .
If this sentence are wrong ,please correct me .
I think "lumber" is a non-countable noun, and "timber" is both countable and non-countable, but that may be an American English difference if that's what you're learning.
"We can cut lumber to 5 metres longest length" means (a) they can cut to less than 5 metres, and (b) some pieces will be shorter than 5 metres.
"We can cut timber into minimum of 5 metres" means they can't cut timber shorter than 5 metres -- the opposite to above.
The reason we say, for example, "5 metres in length" is to show that the measurement of 5 metres is the length and not any other dimension such as width. We don't always prefix "length" with "in".
You are right in saying that "lumber" and "timber" are non-countable nouns, but "a length" can be used as a noun for a specific cut of timber, the plural of which is "lengths".
So you could say:
We can cut timber into 5-metre minimum lengths.*
*you have to be careful this does not sound like you mean 5 lengths of one metre each, because a 1-metre length can be called "a metre length".
or
We can cut timber into lengths no shorter than 5 metres.
(these are using "length" as a noun for the piece of cut timber)
or
The minimum length we can cut timber into is 5 metres.
(this is using "length" as a noun for the measurement)