Какво означава hit-and-miss на английски?

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hit-and-miss Значение & определение

0 If something is hit-and-miss, you cannot depend on it to be of good quality, on time, accurate, etc.:
- The trains are often late, so getting to work on time is a fairly hit-and-miss affair.

Then you really started to hear it, although even then it was a bit hit-and-miss.
One might describe it as a fire brigade method; an ad hoc method; a hit-and-miss method.
We know that predict and provide is a hit-and-miss approach to housing.
In the past, however, our policy has been too hit-and-miss.
It appears to many local authorities that this is a very hit-and-miss method.
Again, the levy is imposed under a number of different provisions and is somewhat of a hit-and-miss affair.
The simple thesis that we are putting forward is that the incidence of aid on the present set-up is of too much a hit-and-miss character.
I believe that this hit-and-miss method is hound to be unsatisfactory.