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Group 19 Aster,Astr,Astro-star
“星星
Aster
紫菀属植物；星状体
Most asters bloom in the fall.
大多数的紫菀在秋天开花。
asterisk
n. 星号vt. 注上星号；用星号标出
The asterisk after “Reduced to $1.95” refers to a footnote reading “Today only.”
在减至一点九五元后，有个星号标示着一个注脚，上面写着只限今天。
asteroids
小行星（asteroid的复数）
Compared to planet Earth,some asteroids are tiny,measuring less than a mile in diameter
跟地球比起来，有一些小行星非常小，测量直径还不到一哩。
If an asteroid loses an arm to an attacker,it can grow back the missing arm.
如果海星车受到攻击失去一条手臂，它又可以长出那去推动的手臂。
astrologer
n. 占星家
An astrologer would have people believe that their lives are regulated by the movements of the stars,planets,sun and moon.
占星家会使人们相信他们的生命是由于星球，行星，太阳和月球的运转而有规律的。
astronaut
n. 宇航员，航天员；太空旅行者
Yuri Ggarin,the world's first astronaut,orbited the earth in an artificial satellite on April 12,1961.
尢里，加加林是世界上第一个太空人，1961年4月他曾在人造卫星中环绕地球轨道而行。
astronomers
天文学家
Because the stars are so far away,astronomers measure their distance from Earth in “light years”.
由于星球是如此的遥远，天文学家们都以光年来测量它们的距离。
disaster
n. 灾难，灾祸；不幸
The attack on Pearl Harbor was the worst disaster in the history of the U.S.Navy.
珍珠港事件是美国海军史上最严重的一次灾难。
