* 1. 转换视角：将"追车"问题转为"到达时间"比较（后车时间≤前车 → 合并）；
It's not yet clear why researchers decided to point Webb in its direction, but little is known about the nebula, including the mass of the star creating it. That matters because a more massive star could eventually explode as a supernova, while a smaller, sun-like star would keep shrugging off layers of material until only a dense core remains and cools over time.
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Цены на нефть взлетели до максимума за полгода17:55
While demand is at an all-time high, the donor consent rate has stagnated.