We must combine theory with practice.
教育理论和实践方面的专家。
It is an important rule that we must combine theory with practice.
我们必须把理论与实践相结合是个重要的原则。
So we must combine competition with cooperation to reach our goals.
所以，我们必须把竞争和合作结合起来达到(实现)我们的目标。
That we must combine theory with practice is an important principle.
我们必须把理论与实践相结合，这是一个重要的原则。
It is an essential principle that we must combine theory with practice.
我们必须把理论与实践相结合是个重要的原则。
In the last, we must combine it with the developing of science and technology.
必须与搞好科技开发紧密结合。
In the last, we must combine it with the developing of science and technology.
必须与搞好科技开发紧密结合。
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