Just take the half of a dark circle and half of a light circle left over from the first quarter moon you made.
只取你制作的第一弦月留下的半个黑圈和半个亮圈。
单词 | First quarter moon |
释义 |
First quarter moon
原声例句
少儿科学秀 Just take the half of a dark circle and half of a light circle left over from the first quarter moon you made. 只取你制作的第一弦月留下的半个黑圈和半个亮圈。 少儿畅学课堂 The first quarter moon is sometimes called the half moon because it appears to us that half of the moon is illuminated, but it is called 'first quarter' because the moon is one-quarter of the way through its cycle. 上弦月有时被叫做半月,因为看上去只有一半月球是亮的,但是它被叫做上弦月,因为这时月亮在整个循环里走了四分之一。
英语百科
Lunar phase![]() ![]() ![]() ![]() The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing positions of the Moon and Sun relative to the Earth. The Moon's rotation is tidally locked by the Earth's gravity, therefore the same lunar surface always faces Earth. This face is variously sunlit depending on the position of the Moon in its orbit. Therefore, the portion of this hemisphere that is visible to an observer on Earth can vary from about 100% (full moon) to 0% (new moon). The lunar terminator is the boundary between the illuminated and darkened hemispheres. Each of the four "intermediate" lunar phases (see below) is roughly seven days (~7.4 days) but this varies slightly due to the elliptical shape of the Moon's orbit. Aside from some craters near the lunar poles such as Shoemaker, all parts of the Moon see around 14.77 days of sunlight, followed by 14.77 days of "night". (The side of the Moon facing away from the Earth is sometimes called the "dark side", which is a misnomer. It receives just as much sunlight as the Earth-facing side − actually slightly more, since the Earth never obscures the Sun from it.) |
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