It was, unfortunately, unclear how this modest proposal would be paid for and, as work began and costs spiralled, the “vision” seemed more science fiction than science.
可惜，这个不大不小的计划资金从何而来，不为人知。 而且随着工作的展开和成本的激增，这一“愿景”更像是科幻，而非科学。
The precise reasons for scrapping the product vision or scope remain unclear.
人们仍然不知道放弃原有的产品愿景或范畴的具体原因。
Just why bright light exacerbates migraines is unclear, because brain regions that govern vision don't overlap with those that transmit pain.
为什么光线会加剧偏头疼，其原因还不清楚，因为人的大脑控制视觉的区域和传播疼痛感觉的区域不在一块。
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