“多云”的英文是：cloudy; broken sky。

1、cloudy为形容词，表示多云的; 阴天的; 朦胧的; 愁容满面的。例如：In that cloudy sky only one lone star can be seen.（在那多云的天上，只能看到孤零零的一颗星星。 ）2、broken sky，表示多云天。如：As shown in the table, a scattered sky is the same as partly cloudy and broken sky is identical with a cloudy one. （正如，疏云天与“少云”一致，而裂云天则与多云一致。）