形容詞 cloudy:

1. lacking definite form or limits
   同義詞：nebulose, nebulous
2. (of especially liquids) clouded as with sediment
   同義詞：muddy, mirky, murky, turbid
3. full of or covered with clouds

1. A drop of milk diffused in the water, and it became cloudy.
   一滴奶在水中擴(kuò)散開來(lái)，使水變得混濁不清了。
2. Tonight will be cloudy.
   今天夜間多云。
3. Cloudy mornings give way to clear evenings.
   [諺]早晨云遮日，晚上星滿天。
4. 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顆星星。
5. It's cloudy today.
   今天陰天。

cloud.y

adj.（形容詞）
cloud.i.er,cloud.i.est
Full of or covered with clouds; overcast.
多云的：充滿云的或被云覆蓋的；多云的
Of or like a cloud or clouds.
如云的：云的或如云的
Marked with indistinct masses or streaks:
有云紋的：有模糊的團(tuán)塊或條紋的：
例句：
cloudy marble.
云紋大理石

Not transparent, as certain liquids.
朦朧的：不透明的，如某些液體

Open to more than one interpretation.
多種含義的：可有多于一種解釋的
Not clearly perceived or perceptible.
混亂的，模糊不清的：不是能清楚感知的
Troubled; gloomy.
煩惱的：煩惱的；憂悶的

【引伸】
cloud.ily
adv.（副詞）
cloud.iness
n.（名詞）