Scientists want to bring a chunk of the red planet down to Earth on what's called a sample-return mission.

科学家们希望将这颗红色星球的一大块带回地球，进行所谓的取样返回任务。

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For starters, one crucial source of information is what's known as a zero-age sample: a chunk of lava fresh from the lake.

首先，最关键的信息来源蕴含在所谓的零龄样本(zero - age sample)中，即刚从熔岩湖中刚刚冒出的大块岩浆。

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