On Wednesday evening, millions of Europeans will experience a celestial(天上的，天体的) treat: a solar eclipse. A wide band of north and central Spain, plus a sliver(细长的一条，碎片) of Portugal and parts of Greenland and Iceland will experience a rare total eclipse. The light of the setting sun will be virtually(几乎，实际上) blocked out(遮挡，遮住) across much of western Europe, including the UK, France, Belgium, Switzerland and northern Italy.
周三傍晚，数百万欧洲人将体验一场天文盛宴：日食。西班牙北部和中部的大片区域，加上葡萄牙的一小部分以及格陵兰和冰岛的部分地区，将经历罕见的日全食。在包括英国、法国、比利时、瑞士和意大利北部在内的西欧大部分地区，落日的余晖将几乎被完全遮挡。
Here’s what you need to know:
以下是你需要了解的内容：
What is a solar eclipse?
什么是日食？
A solar eclipse occurs(发生) when the moon passes directly between the Earth and the sun, resulting in the moon casting a shadow on the Earth.
当月球直接从地球和太阳之间穿过，导致月球在地球上投下阴影时，就会发生日食。
How rare is Wednesday’s event?
周三的这次日食有多罕见？
When will it take place?
日食何时发生？
How can I view the eclipse safely?
如何安全地观看日食？
Why are scientists excited?
科学家为何兴奋？