optical: [16] Greek optós meant ‘visible’ (it was presumably related to ophthalmós ‘eye’, source of English ophthalmic [17], and belonged to the general Indo-European family of ‘eye’/‘see’- words – including English eye itself – that goes back to the base *oqw-). From it was derived optikós, which has given English optic [16] and optical. Optician [17] originated as a French coinage. => ophthalmic
optical (adj.)
1560s, from optic + -al (1). Of abstract art, from 1964. Related: Optically.
实用例句
1. Sloping walls on the bulk of the building create an optical illusion.
大楼主体的斜墙给人造成一种视错觉。来自柯林斯例句
2. The camera combines rugged reliability with unequalled optical performance and speed.
这款相机既坚固耐用，又有超凡的光学性能和快门速度。来自柯林斯例句
3. These optical fibres may be used for new sorts of telephony.
这些光缆可以用于新型电话通讯系统。来自柯林斯例句
4. optical instruments such as microscopes and telescopes
显微镜和望远镜等光学仪器来自《权威词典》
5. They concentrated on better definition of the optical image.
