surface ice的用法和樣例：
例句
- The ship is nudging through the ice.
船在冰中推進(jìn)。 - Matvey saws out a great piece of ice for a lectern.
瑪特威鋸下一大塊冰做讀經(jīng)臺用。 - Perhaps, he said, the martian methane is continually produced beneath the surface but only released when summer warming breaks an icy seal on the surface.
穆馬說(shuō)，也許火星甲烷不斷地產(chǎn)生于地面之下，但是只有當夏季的升溫打開(kāi)了表面上的一處冰封之后，甲烷才能冒出來(lái)。
