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Được nói trong 3 đoạn từ 3 kênh · B2–C1 · các dạng khác: airplanes
And we made stuff that could harness electricity, we made airplanes, and we made stuff that could go to the Moon.
But just like on Earth, if you hike up a mountain or go in an airplane, it gets colder and colder above the surface.
They can't get on -- they couldn't -- for a while, they couldn't get onto an airplane without getting strip-searched.