(1)数字の後に0を9つ付けて表す数
(2)十億
(3)the number that is represented as a one followed by 9 zeros
(4)a billion; "in England they call one thousand million a milliard"
さらに詳しく
(1)終わりのない時間
(2)time without end
(1)神と天使の住まい
(2)the abode of God and the angels
