这周末的天文爱好者可是闲不了，天琴座流星雨（Lyrid Meteor Shower），观测历史非常悠久的一个流星雨，最近是它的频繁期。但是它在北半球才能观测到哦，对，你没有看错，就是和我们南半球的孩子并没有关系。However，有文波的小编带大家领略一下，天琴座流星雨的美。
The radiant — the point from which the meteors appear to originate — will be high in the evening sky in the constellation Lyra to the northeast of Vega, one of the brightest stars visible in the night sky this time of year. Don’t look directly toward the radiant, though, because you might miss the meteors with the longest tails.
这个radiant，就是“光点”，这个流星起源的点。所以不建议大家直接看这个点，而是有角度的观察。这样你才能看到流星“最长的尾巴“。
第一句话三行，41个字，有没有觉得像一个什么题型？嗯哼，SWT，一个主句，加两个同位语。有没有又学到一招？可以把定语从句全部替换成同位语进行补充解释哦。
一般同位语前面写逗号“，”就可以，这里用了破折号（M-dash）也是用来表示或者突出同位语。
那么What causes the Lyrids?
Lyrid meteors are little pieces of Comet Thatcher, a long-period comet that orbits the sun about once every 415 years. Pieces of debris left in the comet’s wake, however, make an appearance every year. (Comet Thatcher’s most recent perihelion, or closest approach to the sun, was in 1861. It won’t be back until the year 2276.)
看来该文的作者很擅长用同位语，同位语“a long-period comet that orbits the sun about once every 415 years”用来解释这个Comet Thatcher.
wake：尾部，名词；非我们认识的wake me up
perihelion：近日点
Meteor showers occur when the Earth crosses the path of a comet, colliding with a trail of comet crumbs. That’s why they happen around the same time every year and appear to originate from specific points in the sky. As they burn up in the atmosphere, the meteors leave bright streaks in the sky commonly referred to as “shooting stars.”
每年的4月下旬，地球会穿越佘契尔彗星彗尾留下的尘埃带，这样的遭遇导致了天琴座流星雨的产生。
文波陪伴，英语不难！
文波陪伴，PTE不难！
文波英语培训学校，澳洲最负责，最有效的英语培训学校！
