About 1.5 million years young, the cluster stars are near the center in this colorful skyscape, along with dark dust clouds silhouetted against glowing atomic gas.
这个星团的年龄大约只有一百五十万年，在这幅彩色图中靠近中心位置，四周是受原子气体光辉映照着的尘埃云气暗影。
I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?
我要说的是，在能级图的帮助下，可以解释氦气是单原子气体，而不是分子气体这一事实，那么这个呢？
I would say with the aid of an energy level diagram explain the fact that helium is found as atomic gas and not molecular. How about this one?
我要说的是，在能级图的帮助下，可以解释氦气是单原子气体，而不是分子气体这一事实，那么这个呢？
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