LEARNit Dictionary
crystal clear
adjective
/ˌkrɪstl ˈklɪə(r)/
UK
/ˌkrɪstl ˈklɪr/
US
1
completely clear and bright
کاملاً شفاف
2
very easy to understand; completely obvious
کاملاً واضح, بدیهی, بیابهام
I want to make my meaning crystal clear.
You’ve got to make your intentions crystal clear to them.