The phrase 'crude example' is correct and can be used in written English.
It is used to describe an example that is oversimplified and easily understood but perhaps not very sophisticated or accurate. For example, "This is just a crude example, but it helps to illustrate the concept."
That's a very crude example, but I just keep things very simple.
In Cheshire West and Chester, by crude example, transport services are provided by a range of local organisations already working with disabled and older citizens, as well as other target groups.
We may, however, describe a crude example (not Kim's own) and express some of Kim's cardinal points in its terms.
Here's a crude example: you're reaching breast cancer, but the filter only sees "breast," so it prevents you from your research.
(Although epistemologists will disagree about what the appropriate conception of probability is, here is a crude example of how probability may figure in a fallibilistic epistemology.
To give a crude example, gross value accounting means that if a trader makes a market in an energy derivative and matches an energy contract to buy energy for $1 million with an offsetting obligation to sell it for $1.01 million, he considers his revenue to be $1.01 million.
But they also view them with a critical detachment, seeing them as particularly crude examples of Arab propaganda.
Crude examples of his strongest trait -- depicting vast stretches of open space -- line the quarter-mile-long hallway where prisoners are led to cellblocks in the James A. Thomas Center jail.
Crude examples, we know, but the point we're trying to make is you actually don't need to be a mathematician in the league of Alan Turing to stand a chance of breaking into accountancy.
To conclude from a few crude examples that all naturalistic definitions will fail is just bad induction.
It can be a turn-off, of course, if it's overdone – I've never quite been able to face the perfumed pungency of Parma violets or the cruder examples of Turkish delight – but get the degree of fragrance just right and you can create very beautiful food indeed.
