The second moon is a " blue moon" .

第二个月亮是" 蓝色月亮" 。

Now I punish myself every blue moon.

现在我逢蓝月就惩罚自己。

" I do it once in a blue moon."

“我很少那样做。”

It'll be a super blue moon, a rare combination of a super moon and a blue moon.

这将是个超级蓝月亮，罕见超级月亮和蓝月亮组合。

Once in a blue moon is an informal phrase.

Once in a blue moon（千载难逢） 是个非正式短语。

This is the modern definition of a blue moon.

这就是现代对蓝月定义。

Luke can hear beautiful music and see a big blue moon.

Luke能听到美妙音乐，看到轮又大又蓝月亮。

Once in a blue moon. It doesn't mean that the moon is blue.

Once in a blue moon（千载难逢），它意是月亮是蓝色。

Some people are calling this week's lunar event a super blue blood moon.

有些人将本周月球活动称为“超级蓝血月全食”。

A blue moon is a second full moon in one month.

“蓝月亮”是指个月内第二次满月。

My brother lives in Australia so I see him once in a blue moon.

我哥哥住在澳大利亚，所以我很少见到他。

The NASA experts explain that a blue moon is not actually blue in color.

美国国家航空航天局专家解释说，蓝月实际上并是蓝色。

Saturn appeared as a bright " star" to the upper right of the blue moon.

在这颗蓝月亮右上角，土以颗明亮“恒”形式出现。

According to NASA, this combination, a super blue moon is very rare.

据美国宇航局称，这种超级蓝月组合非常罕见。

Once in a blue moon is a common way of saying that something does not happen often.

once in a blue moon意是某事经常发生，这是个很常见用法。

The second full moon in a particular month is called the blue moon.

某个特别月份中第二个满月就叫蓝月亮。

It should make for a really " bootiful" but eerie once in a blue moon Halloween night.

今年或许会过个令人真正“毛骨悚然”万圣节蓝月之夜。

Although it is called a blue moon, it does not appear blue in color.

虽然它被称为蓝月亮，但它颜色并是蓝色。

They say a blue moon is the " extra" moon in a season with four full moons.

他们说蓝月是季中，四个满月里多出来那个满月。

A " blue moon" is a long or seemingly long period of time.

" 蓝月" 指是很长或看起来很长段时间。