a curved piece of glass or plastic that makes things look larger, smaller or clearer when you look through it 透鏡；鏡片 
a pair of glasses with tinted lenses 一副有色鏡片眼鏡
Extra ExamplesPut your hand in front of your right lens and just look through your left lens. 把你的手放在右邊的鏡片前，只用左邊的鏡片看。 She wears glasses with very thick lenses. 她戴的眼鏡鏡片很厚。
Oxford Collocations Dictionaryadjective- strong
- thick
- coloured/colored
- …
- cap
- cover
- through a/the lens
-
a piece of equipment that is part of a camera, containing one or more lenses 鏡頭： 屬於相機的一部分設備，包含一個或多個鏡頭a camera with an adjustable lens 帶有可調鏡頭的照相機 a view of Mount Kilimanjaro as seen through Eddie's camera lens 透過埃迪的攝影機鏡頭看到的乞力馬紮羅山風景 a lens cap/cover 鏡頭帽；鏡頭蓋 a long-lens shot of a rare bird 用長焦鏡頭拍攝的珍禽照片
- (informal)
a contact lens (= a small round piece of thin plastic that you put on your eye to help you see better) 鏡片： 隐形眼鏡 - (
anatomy 解剖學 the clear part of the eye, behind the pupil, that focuses light so that you can see clearly （眼球的）晶狀體 
Word Originlate 17th cent.: from Latin, ‘lentil’ (because of the similarity in shape).