Crossing a line as sharp as if it had been drawn with a ruler, though there was no obvious visual difference, Spirit moved from pure, hard basalt to an area where every rock seemed to have been altered by water.
英
美
- 跨過(guò)一條像用尺子比好畫(huà)出的直線(xiàn)后，雖沒(méi)有明顯的視覺(jué)差異，但“勇氣號”將堅硬玄武巖拋在身后，進(jìn)入了另一個(gè)區域，那里的每塊巖石都似乎曾被水作用過(guò)。
