我们老师说，只要看得到小北斗七星就表示天空够暗，就可以看到流星雨了。
Our teacher said that as long as we can see the little dipper then it's dark enough to watch meteor showers.
1952年的今天，孟斐斯儿童公园在俄亥俄州的布鲁克林开始。公园中的小北斗七星过山车成为北美最古老的翻滚过山车。
1952 - Memphis Kiddie park opens in Brooklyn, Ohio. The park's Little Dipper roller coaster would become the oldest operating steel roller coaster in North America.
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