1.  first contact
2.  eclipse beginning

• 1. 初亏: first contact | beginning of eclipse | start of partial eclipse
• 2. 减轻了初期亏损: Reduced initial loss | The initial loss mitigation

• 1.初亏、食既、生光和复圆又分别称为第一、第二、第三、第四接触。
  Early losses, both fresh, light and health-circular also called the first, second, third, fourth contact.
  dict.yoduao.com
• 2.初亏：太阳与月球第一次外切，太阳光球西面刚切入月球东面的时刻。
  Early losses: the sun and the moon, the first cut, just west of the sun-Cut east of the moon moment.
  dict.yoduao.com
• 3.在英国南部地区，由于随着黎明的到来月亮从西边缓缓落下，只能看到起初的部分月相和月全食的开始阶段，即初亏。
  From southern parts of the UK, the initial partial phase and the beginning of totality were expected to be visible, with the Moon dropping down into the western sky as dawn approached.
  dict.yoduao.com

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