translation.en: And the reason I showed the little arrow there, I think that should say 30 miles, we decided a few months ago to actually fly the spacecraft through the plume of that geyser so we can actually measure the material that it is made of.
translation.zh: 我在这里标注了距离， 应该是30英里， 几个月以前我们让航天器 飞越了间歇泉的漂浮物 这样我们就可以实际测量物质组成。