Aktinyum radyoaktif bir elementtir.
- Actinium is a radioactive element.
Aktinyum-224'ün yarı ömrü 2.7 saattir.
- The half life of actinium-224 is 2.7 hours.
... Governments, in part, are supposed to be there to act in ...
... Act in terms of what's going to be good for all of us over ...