1. It is an area of sandy soil.
    这是沙质土区。

2. It is a world of red sandy deserts (hence its name----the Red Planet), cloudless skies, savage sandstorms, chasms wider than the Grand Canyon and at least one mountain more than twice as tall as Everest.
    这是一个红色沙漠的世界（因而得名：红色行星），无云的天空，凶猛的沙暴，比大峡谷还宽的裂缝，起码有一座山有珠穆朗玛峰的近两倍高。

3. I've been thinking about Sandy too."
    我也一直在想桑迪的事。"

4. It could have a negative influence on Sandy.
    它对桑迪可能有负面的影响。