ラドンだった
radondatta
1. Was radon.
★ Common
Noun
#1000567
1. Was radon.
1. radon (Rn)
1. If it were radon; When it's radon
1. Radon's; Relating to radon
1. With radon; By radon
1. Radon is.; I am.
1. Not radon.; It's not radon.
1. It was radon.
1. Radon, probably.; It will likely be radon.
1. It is not radon.