The inner envelope filled with helium in 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。
2
He looked at the receptionist and wagged his tail, then walked over to the sign, looked at it, and whined.
他先是对着接待员摇尾巴，然后走到启事那边，看着那则启事呜呜地叫。
3
She was also good at showing unhappiness with her tail, trying to make me stay.