已达规定数额，数额已足够sufficient number

• 在作风整顿办督查下,驾校把足额退还学员。

  Under the supervision of the Working Style Rectification Office, the driving school returned the full amount to the students.

• 98％左右的离退休人员按时足额领到了养老金。

  Around 98% of retired people get the full amount of their pension on time.