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。

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The Borrower fully understood that the L/C could not be withdrawn or refundable for cash other than extension of validity dates after the L/C has being issued.

借款方应充分了解，除非信用证 开出后延长有效期 日期，信用证不可以现金方式撤回或退还。

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If an import license is not used or not fully used within the period of validity, the operator shall go through formalities for extension at the adjusted license issuing agency.

有效期内未使用或者未全部使用的进口许可证，按规定到调整后的发证机构办理延期手续。

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The incidents also follow China's efforts to involve the United Nations in the dispute to determine the validity of its claim that the islands are a natural extension of its continental shelf.

CNN: STORY HIGHLIGHTS