1.Astrogeologists suspect these scarps may be analogous to the wrinkles on a raisin, having formed billions of years ago as the planet's surface cooled and shrank.
太空地质学家猜测这些陡坡可能类似于葡萄干上的皱纹，是在几十亿年前当行星表面冷却收缩时开始形成的。
2.Astrogeologists suspect these scarps may be analogous to the wrinkles on a raisin, having formed billions of years ago as the planet's surface cooled and shrank.
太空地质学家猜测这些陡坡可能类似于葡萄干上的皱纹，是在几十亿年前当行星表面冷却收缩时开始形成的。
3.Astrogeologists suspect that these scarps having formed billions of years ago as the planet's surface cooled and shrank.
太空地质学家猜测这些陡坡是在几十亿年前当行星表面冷却收缩时开始形成的。