A/B testing variations
What are Moon phases?According to NASA, the Moon takes about 29.5 days to orbit the Earth. Over the course of this period, it moves through eight recognisable phases. While the same side of the Moon always faces us, the amount of its surface lit by the Sun changes as it continues along its path. The shifts in sunlight create the different appearances we see from Earth, ranging from a fully illuminated Moon to a thin sliver or near darkness. The eight phases are:
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而早已去世的爷爷奶奶却不同。小时候，奶奶睡前给我讲民俗故事，讲到《半夜鸡叫》时学周扒皮“咯咯咯”地笑，我也跟着笑。她用箬叶包粽子，用玉兰花泡酒，一遍遍做我爱吃的番茄炒蛋，直到那道菜让我生出厌倦。爷爷虽然吝啬，也会在午睡前给我留下几块零花钱，在春节时给我买烟花和零食。
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