translation.en: You have to stay focused on a 50-centimeter target from over 600 miles away while moving at more than seven kilometers a second, which requires an awesome degree of complexity.
translation.zh: 你需要从600英里以外 聚焦一个50厘米的对象 同时以每秒7公里的速度移动 这些都需要非常高的准确度