有效期限的用法和樣例：
例句
-
一般來(lái)說(shuō)不應要求延長(cháng)投標有效期限。
Extension of validity of bid shall normally not be requested. -
投標人有權拒絕延長(cháng)投標有效期限并不會(huì )因此而失掉其投標保證金。
Bidder shall have the right to refuse to grant such an extension of validity of bid without forfeit their bid bond. -
還有，有效期限？
And the expiration date?
