We were only able to make a rough estimate of how much fuel would be required.

我们只能对所需燃料的量作一个粗略估计。

《柯林斯英汉双解大词典》

We were only able to make a rough estimate of how much money would be required.

需要多少钱，我们只能做个大致的估计。

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There is also no reliable way to determine the content of collagen in liver. The diagnose of liver fibrosis based only on a rough estimate has a limited applications.

另外，目前还没有可靠的办法确定肝组织胶原的含量，仅根据肝内纤维增生的情况进行大概的估计，具有一定的局限性。

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There is also no reliable way to determine the content of collagen in liver. The diagnose of liver fibrosis based only on a rough estimate has a limited applications.

另外，目前还没有可靠的办法确定肝组织胶原的含量，仅根据肝内纤维增生的情况进行大概的估计，具有一定的局限性。

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