The rover's exploration area is believed to include a former river valley measuring about 400 meters wide.

据信，火星车的探测区域包括一个宽约400米的前河谷。

Petrobras said its proposal did not violate any requirements set forth by the government, and its exploration area was far away from the river.

巴西国家石油公司表示，其提案没有违反政府提出的任何要求，而且它的勘探区域远离河流。