Firstly, all existing supplies of helium ought to be conserved and released only by permit, with medical uses receiving precedence over other commercial or recreational demands.
⇑ Translate the sentence above by Google ⇑
Related: firstly
Prev: Firstly, you can leave the bottles there as they are.
Next: Firstly, ambition plays an essential role because it serves as a driving force for people to achieve success.
