clear与clean有何区别?

clear是“清楚的,清晰的,晴朗的,透明的,清澈的（水）”意思.用在字体（写的字）,天气,水,眼睛,声音,天空等等.如：In the morning,the sky was clear,but in the afternoon it became rainy.而clean是：“干净的,清洁...