It is a simple but practical test.
这个测试很简单但是很有效。
The result shows that the model is not only correct but also simple and practical.
结果表明，该简化模型不仅正确，而且简单实用，具有一定的实用价值。
Although this procedure is not complicated, but can be brought on simple and practical.
这个程序虽然不复杂，但拿来就可以用，简单实用。
Although this procedure is not complicated, but can be brought on simple and practical.
这个程序虽然不复杂，但拿来就可以用，简单实用。
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