总的运营成本的下降主要来自于“单一太阳能产品销售额的下降而削减的各种开支”，杜说。
The overall decrease in operating expenses was primarily "due to cutting down all kinds of expenses as a result of the decrease in sales of single solar products," du says.
另一可能的假设是如果一个星球上的光主要来自于一颗红矮星和一个类似太阳星球的组合。
One possible scenario is a hospitable planet that receives light from both a red dwarf and a more distant Sun-like star.
另一可能的假设是如果一个星球上的光主要来自于一颗红矮星和一个类似太阳星球的组合。
One possible scenario is a hospitable planet that receives light from both a red dwarf and a more distant Sun-like star.
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