1. a grey, cloudy day 灰暗多云的天空来自《权威词典》

2. Only a tiny patch of blue was visible in the cloudy sky. 多云的天空中只见到一小块儿湛蓝。

来自《简明英汉词典》

3. Bob always enjoys sailing, even though the weather is cloudy. 鲍勃总是很喜欢航行，即使空中乌云密布。来自《简明英汉词典》

4. It's so cloudy and cold that it's likely to snow. 天气又阴又冷，大半要下雪。