bifocals

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++bi·fo·cals /baɪˈfəʊkəlz $ ˈbaɪfoʊ-/ noun [plural]  MDspecial glasses with an upper part made for seeing things that are far away, and a lower part made for reading 双光眼镜〔镜片上部用以看远处物体，下部用以阅读的眼镜〕 —bifocal adjective

Examples from the Corpus

bifocals• You see two-zip in this Series, pal, you better give up those drugstore bifocals.• Her eyes loomed behind her bifocals.• Discreetly Pamela put on her bifocals and craned her neck.• Mom wore large bifocals with Sophia Loren frames and a pastel polyester pantsuit that stretched over her abdomen.• He had a pair of rimless bifocals in one hand, chewing on one of the stems as he read.• For instance, it was by trusting the bifocals of Euhemerus that Heinrich Schliemann rediscovered Troy.• An effort to look through bifocals put a jaunty thrust in Lois's small chin.

bi·fo·cals nounChineseSyllable  

upper special part an with made glasses Corpus

bifocals
bi‧fo‧cals /baɪˈfəʊkəlz $ ˈbaɪfoʊ-/ noun [plural]
special glasses with an upper part made for seeing things that are far away, and a lower part made for reading
—bifocal adjective

bi·focalsBrE /ˌbaɪˈfəʊklz/ 🔊NAmE /ˌbaɪˈfoʊklz/ 🔊 noun [plural] a pair of glasses with each lens made in two parts. The upper part is for looking at things at a distance, and the lower part is for looking at things that are close to you. 双光眼镜（上半片为看远，下半片为看近）  ➡  compare varifocals ▸ bi·focal BrE /ˌbaɪˈfəʊkl/ 🔊NAmE /ˌbaɪˈfoʊkl/ 🔊 adjective [only before noun]