fair-weather cirrus晴天卷云
fair-weather current晴空电流
fair-weather cirri晴天卷云
fair-weather friend酒肉朋友;只可共安乐的朋友
fair-weather friends顺境中的朋友;境中的伴侣;酒肉朋友;境中的朋侪
fair-weather cumulus淡积云
a fair-weather friend不能共患难的朋友;酒肉朋友;狗肉朋友;不能同患难的朋友
ADJ（形容词） You use fair-weather to refer to someone who offers help to someone, or who takes part in a particular activity, only when it is easy or pleasant for them to do so. 经不起考验的; 不可共患难的; 顺境的 [ADJ n] [表不满]
...a fair-weather friend.
...一个不可共患难的朋友。