Now, scientists are building the next rover to be sent to Mars. But before they fuel the rockets, researchers have to pick a spot to explore.

现在科学家们正在着手建造下一代的火星探测器，但在火箭升空之前，研究者们还要在火星上挑一个着陆点。

youdao

Pick a spot.

挑一个地点。

youdao

Pick a spot.

挑一个地点。

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