twenty-twenty vision
noun [ U ] uk/ˌtwen.tiˌtwen.ti ˈvɪʒ.ən/ us/ˌtwen.t̬iˌtwen.ti ˈvɪʒ.ən/ (also 20/20 vision)
极好的视力
perfect sight, especially as measured by a standard test
The optician told me I had twenty-twenty vision. 验光师告诉我，我的视力毫无问题。