And my theme was this: Our Earth has existed for 45 million centuries, but this one is special — it's the first where one species, ours, has the planet's future in its hands.
今日のテーマは 4,500万世紀もの間 続いて来た地球の 今世紀は特別で 人類が その手中に 地球の未来を 握っているという事です