Sentence examples for this is a prototype from inspiring English sources
Leidner cautioned, "This is a prototype".
This is a prototype and we hope it will lead to more.
"This is a prototype," Gleitzman said, passing a 3D-printed tablet to McCarty.
Because this is a prototype, don't be afraid to reinforce these with gaffer tape.
"This is a prototype hand cleaner," Arbogast said, opening a jar filled with stuff the color and consistency of cold cream.
This is a prototyping version, and it is still being developed to make better, thank you.
No markings – this was a prototype – and the keyboard ran on two AA batteries.
This was a prototype and is missing some parts but does turn on so I have no doubt someone can make this work with the right skills.
MacRumors seems pretty sure this was a prototype for the current iPad, built in very limited numbers for real-life comparison and scrapped for the reasons I've mentioned.
In this sense this proposal is a prototype of all subsequent systematic research of its kind.
