However, the amount of heliumin the universe, as measured by spectroscopy, suggests that there are far more baryons in the universe than estimates based on galactic luminosity indicate.
然而,通过光谱学测量,宇宙中氦的数量表明,宇宙中重子的数量要比基于星系光度所估计的要多得多。
2
The inner envelope filled with heliumin the head section of the blimp and the third built-in airbag at the tail is filled with ethane combustible gas.
飞船头部的内置气囊中充满了氦气,而置于尾部的第三节内置气囊则充满了乙烷可燃气体。
3
I have here a ball — you may call it a balloon, but I call it a ball because there's no heliumin it.