平均来说，大陆架约为70公里宽，在部分太平洋海岸其大陆架较窄，只有几十公里宽。
On the average the continental shelf is about 70 km wide. One much of the Pacific Coast it is relatively narrows, only a few tens of kilometers across.
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。
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.
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