No worries. Here are six Valentine’s Day gifts for under $10 (including two free Valentine’s Day gifts) that will have your sweetheart over the moon.

不要担心，这里有六种情人节的礼物，价格不超过10美金（其中还包括两种免费的），这些礼物可以帮助你俘虏爱人的心，让她欣喜若狂。

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To view a young moon the day after new moon is no small feat!

要想看到新月后的月亮可不是简简单单的事情。

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It is said that on the moon there is no water and air, and it is very cold at night and very hot in the day.

据说，在月球上既没有水也没有空气，晚上很冷，白天又很热。

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So, Galileo here is struggling to get the proper visionary fix on the moon at a point in the day when there are no absolutes.

因此，伽利略在此是试图着要在没有绝对的时刻,得到月亮的方位。

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