Transforms can be stateless or stateful. A stateless transform is just a function that takes chunks and returns transformed chunks:
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。关于这个话题，Line官方版本下载提供了深入分析
const sb = _apply.call(origAddSB, this, arguments);，更多细节参见heLLoword翻译官方下载
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: