EM: That's right. So it's important that the rocket stages be able to come back, to be able to return to the launch site and be ready to launch again within a matter of hours.
ロケットの各段が自分で 打ち上げ場に戻ってきて 数時間内にまた 打ち上げの準備ができる— ということが 重要なんです