1, 3, 5, 7, etc., are odd.（英译中)

How old are you？（英译中)

He does odd jobs for me from time to time.（英译中)

You are looking rather pale, are you ill？（英译中)

We are not teachers.（英译中)

Building materials are expensive.（英译中)

They are mad about football.（英译中)