extension of validity

• 有效期的延长

extension of validity的用法和样例：

例句

1. Extension of validity of bid shall normally not be requested.
   一般来说不应要求延长投标有效期限。
2. Bidder shall have the right to refuse to grant such an extension of validity of bid without forfeit their bid bond.
   投标人有权拒绝延长投标有效期限并不会因此而失掉其投标保证金。