›to have a problem with youreyes so that you see two of everything, usually because you are drunk or ill
（通常指因醉酒或疾病导致视力）出现重影I startedseeing double, then I fainted.
我的眼前开始出现重影，然后就晕了过去。Eyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers
by Liz Walter Enough is a very common word, but it is easy to make mistakes with it. You need to be careful about its position in a sentence, and the prepositions or verb patterns that come after it. I’ll start with the position of enough in the sentence. When we use it with a noun,