The full effect of Sunday's total solar eclipse was visible to just a few people along a narrow, 155-mile-wide (250-kilometer-wide) band of the Pacific Ocean.

只有少数人有幸观测到了周日日全食的完整效果，因为它沿着太平洋所投下的本影带只有250公里宽。

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This effect was predicted back in the early 1970s, but researchers were only finally able to observe it during the total solar eclipse of July 22, 2009.

此项效应早在20世纪的70年代就被预计到了，可是研究者最后只能在2009年7月22日的日全食时才能观察到。

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