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1·The Public Utilities Commission inspects us once a year.

公用设施委员会每年到我们这里视察一次。《柯林斯英汉双解大词典》

2·Hey, it's a once a year celebration!

嘿，这是一年一次的节日！

3·Hey, it's a once a year celebration!

嘿，这是一年一次的节日！

4·One banana plant usually produces fruit once a year.

一株香蕉通常一年结一次果。

5·Once a year Aaron shall make atonement on its horns.

亚伦一年一次要在坛的角上行赎罪之礼。

6·The snake sheds its skin once a year.

蛇一年蜕一次皮。《牛津词典》

7·Many people have made it a rule to detoxify once a year.

许多人已经养成了每年进行一次身体解毒的习惯。《柯林斯英汉双解大词典》

8·About two-thirds of adults consult their doctor at least once a year.

大约三分之二的成年人一年至少看一次医生。《柯林斯英汉双解大词典》

9·The Tourist Board inspects all recommended hotels at least once a year.

旅游局至少每年视察一次所有举荐的旅馆。《牛津词典》

10·He used to return home at least once a year, but hasn't been back for almost three years now because of the hard job in a crayon factory.

他过去每年至少回家一次，但由于在蜡笔厂工作太辛苦，他已经快三年没回家了。