The plane climbed until it was clear of the clouds.

　　飛機(jī)爬升直至穿出了云層。

　　The sky was full of dark masses of clouds.

　　天空中烏云密布。

　　A cloud of dust rose as the truck drove off.

　　卡車開過(guò)時(shí)揚(yáng)起一片灰塵。

　　The sun disappeared behind a bank of clouds.

　　太陽(yáng)消失在一大片云后面。

　　It was beginning to cloud over.

　　天空開始陰云密布。

　　The dark clouds in the sky meant that a storm was coming.

　　天空中的烏云預(yù)示暴風(fēng)雨即將來(lái)臨。