流过鸟翅膀的空气在翼尖后向上流动，这种现象被称为上升流。

The air flowing over a bird's wings curls upwards behind the wingtips, a phenomenon known as upwash.

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气球能在天空飞是因为热空气会向上升。

A balloon can fly in the air because hot air rises.

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通过使用风筝线，你帮助风筝朝正确的方向上升。

By using the string you help the kite go up in the right direction.

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The most famous climb upward, although we will not actually read these parts for this class, concerns the climb to the divided line, the famous image of the divided line in Book VI, and the ascent to the world of the imperishable forms.

最著名的向上攀升，但我们不会实际,在本课中阅读，这些关于攀升到分界线的段落，著名的分界线景像出现在第，VI，部，上升到,不朽形式的世界。

耶鲁公开课 - 政治哲学导论课程节选