We cannot repeat experiments with just one planet.
我们只有一个地球，无法重复进行实验。
They always perform their experiments with great patience.
他们总是很耐心地做实验。
Early experiments with military rockets prepared the ground for space travel.
早期军用火箭的试验为太空飞行奠定了基础。
Month in and month out, the experts are carrying on their experiments with full confidence.
专家们满怀信心一月又一月地进行着实验。
They will report on the experiments with coal tar.
他们将汇报煤焦油的试验情况。
So these are different experiments with that. I won't go into them.
这些是不同的实验，我不会在此详谈。
Now, in addition to the rocket belt, there are experiments with a turbine belt.
现在，除了火箭背带之外，还进行了涡轮机背带的实验。
Now, in addition to the rocket belt, there are experiments with a turbine belt.
现在，除了火箭背带之外，还进行了涡轮机背带的实验。
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