本证的装船有效期均于到期日自延展15天的英文

both shipment and validity dates of this credit shall be automatically extended for 15 days at the date of expiry

• 的:    4次方是 The fourth po ...
• 装船:    shipment; loading ...
• 有效期:    term of validity; ...
• 均:    equal; even
• 到期日:    date due; date of ...
• 自:    self; oneself; one ...
• 延展:    extension; send
• 天:    sky; heaven