中英成语俚语800对022：变幻莫测

　　中英成语俚语800对022：变幻莫测

　　变幻莫测

　　The unexpected always happens.

　　eg：Be prepared for the worst as the unexpected always happens.

　　同义词：天有不测风云 Though the sun shines, leave not your cloak at home.

　　反义词：一成不变 Hard and fast.