It only takes a few hours for the book to appear ready for download as opposed to a conventional paperback which can take a year. (angiesdiary.com)
If you remove a tick soon after it attaches, chances are low that you'll be infected with anything, since it usually takes a few hours for them to begin feeding. (health.com)
These systems always seemed work well for me, and it only takes a few hours of driving to commit even the more complicated operations to memory, right? (autoweek.com)