They were also starting to use copper for making certain tools or weapons.

His personal effects, together with certain tools, were spread out on a nearby table.

"There are certain tools I need to make first."

Minor differences made some more appropriate for certain tools than others.

The third secret element provides certain tools for the equations creation.

Just like in your business, I have certain tools available to me to make my system work.

The professional uses a certain tool, and then they want it, too.

He asked about certain tools and the herbs used to season the soup.

Additional commands are added to the language for functions specific to a certain tool.

You're given certain tools and you have X number of years to figure it out.