bifocals(复数名词):双光眼镜;镜片上有两种焦距(通常上半部看远、下半部看近),方便同时看远处与近处。(单数:bifocal)
也可泛指双光镜片。
/ˈbaɪˌfoʊkəlz/
I need new bifocals for reading and driving.
我需要一副新的双光眼镜,用来看书和开车。
With his bifocals perched on the tip of his nose, he scanned the fine print and then looked up at the clock across the room.
他把双光眼镜架在鼻尖上,先看了看小字印刷的说明,又抬头望向房间对面的钟。
bi- 表示“二、双”,focal 来自 focus(焦点、焦距)。合在一起表示“双焦点的(镜片/眼镜)”。双光眼镜常用于需要同时矫正远视与老花(近距离阅读困难)的人群。