I am reading a file and copying selected lines from the file into another using echo.
For eg:

while read line
do
if ((some logic to determine whether I need to copy the current line to another file))
then
echo $line > tempfile
fi
done<srcfile

The problem I have is the data in the file is:

12345 bjhjhd sdjkfhkdsfjh fdsfsf sdfds
43214 hjhkjkj kjhkjhkhjhjknds jkjnkjnk jkokjlkj
djjdfff sdfsdffdfgfgdfgfdf sdfsfsdfsgv dfsdfv

each line has multiple spaces.

After running the above piece of code tempfile is created as:
12345 bjhjhd sdjkfhkdsfjh fdsfsf sdfds
43214 hjhkjkj kjhkjhkhjhjknds jkjnkjnk jkokjlkj
djjdfff sdfsdffdfgfgdfgfdf sdfsfsdfsgv dfsdfv

echo is suppressing multiple spaces.. how to avoid it?

Can you please help!
Thanks in advance!