drop atomic bomb on
用介词on,强调由高向下投掷;to多见用于水平方向
见例句:
“1945,US drops atomic bomb on Hiroshima.The first atomic bomb has been dropped by a United States aircraft on the Japanese city of Hiroshima”
“Truman’s decision to use the atomic bomb on Japan was for the purpose of saving lives and ending the war quickly in order to prevent a disastrous land invasion.”