in·so·la·tion
noun/ˌɪnsəˈleɪʃn/
/ˌɪnsəˈleɪʃn/
[uncountable] (specialist)- the amount of light from the sun that reaches a particular area
日照量 Word Originearly 17th cent.: from Latin insolatio(n-), from the verb insolare, from in- ‘towards’ + sol ‘sun’.