必要的话,你的定义可多达数句。
If necessary, your definition may consist of several sentences.
用另一句话说:马赫数是气体的有序运动和分子无规则热运动的程度对比的度量。
In other words, the Mach number is a measure of the directed motion of the gas compared with the random thermal motion of the molecules.
On the other hand, if we had a quarter as much venture capital, I think that would be in the sense the world would contract too much.
换句话说,如果资金数是风险资本的四分之一,我想现在订立的合同,太多了。
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