acuity
noun /əˈkjuːəti/
/əˈkjuːəti/
[uncountable] (formal)- the ability to think, see or hear clearly
(思维、视力、听力的)敏度,敏锐 - a child’s visual acuity
儿童的视力
词源late Middle English: from Old French acuité or medieval Latin acuitas, from Latin acuere ‘sharpen’ from acus ‘needle’. - a child’s visual acuity