Also, this would allow a fresh Issole sample to be taken  later, maximising its sample space efficiency.

此外， 这还允许稍后采集新鲜的 Issole 样本，从而最大限度地提高样本空间效率。

We'd wait for elephants to urinate and, within 20 minutes, go and collect these fresh urine samples.

艾伦：我们会等大象排尿，然后在 20 分钟内去收集这些新鲜的尿液样本。

The 30% to 99% range that the researchers posit for the amount of Martian water stored in the ground is admittedly imprecise—and will likely narrow definitively only when humans can collect fresh samples and study them up close.

诚然，研究人员假设的 30% 到 99% 的火星地下水储量范围是不精确的——只有当人类能够收集新鲜样本并对其进行近距离研究时， 这一范围才可能最终缩小。