fair-weather friend : someone who you can not count on

中文意思: 你無法信靠的人 : 酒肉朋友

例句 She turned out to be a fair-weather friend once I lost all my money and couldn't go out as much. (當我失去所有的錢而無法常常出去玩樂時, 我才發現她其實只是個酒肉朋友