“a cloud on the horizon”：即将出现的问题，不是 “地平线上的云”。
例句：There seems to be a cloud on the horizon as the company’s sales have started to decline.（公司的销售额开始下降，似乎有一个即将出现的问题。）


“a bolt from the blue”：意外事件，不是 “蓝色的闪电”。
例句：The news of his resignation was a bolt from the blue.（他辞职的消息是一个意外事件。）


“in a fog”：困惑，不是 “在雾里”。
例句：I’m completely in a fog about this math problem.（我对这道数学题完全困惑。）


“weather the storm”：渡过难关，不是 “经受暴风雨”。
例句：The company managed to weather the storm of economic recession.（公司设法渡过了经济衰退的难关。）


“be as cold as ice”：非常冷漠，不是 “像冰一样冷”（这里强调其形容人的情感状态）。
例句：She was as cold as ice when I tried to talk to her.（当我试图和她交谈时，她非常冷漠。）