求翻译：因为我们不可能进行穷举测试，为了节省时间和资源、提高测试效率，必须要从数量极大的可用测试数据中精心挑选出具有代表性或特殊性的测试数据来进行测试。是什么意思？

Because we can not exhaustive test, in order to save time and resources to improve test efficiency, and carefully selected representative or special test data must start with the number of a great deal of test data available to test.

Because we could not have carried out exhaustive tests, in order to save time and resources, increase efficiency, it is necessary to test very large numbers from the available test data in a well-chosen representative, or special test data for testing.

正在翻译，请等待...

Because it is impossible to conduct exhaustive tests, in order to save time and resources, and improve testing efficiency, must be carefully selected from the great number of available test data is representative or special test data for testing.

Because we not impossible to carry on exhaust the test, in order to save the time and the resources, the enhancement test efficiency, must have to choose carefully from quantity enormous available test data has the representation or the particular test data carries on the test.