offer proof的用法和樣例：
例句
- He can now attain only by offering proof that it is directly relevant to social welfare.
現在只有提出證據這種特權與社會福利直接有關，他才能得到。 - Every privilege he formerly took as of right he can now attain only by offering proof that it is directly relevant to social welfare.
過去紳士依法享有的每一特權，現在只有提出證據這種特權與社會福利直接有關，他才能得到。
