原げん爆ばく投とう下か

noun

atomic bombing

Refers to the act of dropping an atomic bomb, especially in historical contexts such as Hiroshima and Nagasaki.

• 原げん爆ばく投とう下かから70年ねん以い上じょうが経たった。

  More than 70 years have passed since the atomic bombing.

• 原げん爆ばく投とう下かの歴れき史しを学まなぶことは重じゅう要ようだ。

  It is important to learn the history of the atomic bombings.