Definition
To believe one is experiencing something that is not actually occurring, often due to hallucination or misinterpretation of sensory input.
看錯、听錯、想錯
I could have sworn I heard someone call my name, but there's no one else in the room. I must be hearing things.
我發誓我聽到有人叫我的名字，但房間裡沒有其他人。我一定是在幻聽。
When she said she saw a ghost floating in the air, we thought she must be seeing things.
當她說她看到一個鬼魂在空中飄浮時，我們認為她一定是在幻視。
After trekking for a long distance in the desert, he started seeing water shimmering in the distance, but he knew he must be imagining things.
在沙漠中長途跋涉後，他開始看到遠處有水在閃爍，但他知道他一定是在幻想。