Bottom line? Aerobic metabolism utilizes both fat and glucose as energy sources.

底线? 有氧代谢使用二种能源,脂肪和葡萄糖.

To ensure this, she'll be tested on a treadmill tomeasure her threshold of aerobic metabolism.

为了确保这样，她将会在跑步机上来测量她的有氧运动的极限。

Aerobic metabolism is best for long termendurance, but it's slow to get going, and, like the other systems, it also runs out of steam.

有氧代谢有利于长期的耐力训练，但是它的反应比较慢，而且就像其他的系统样，它同样会很快的筋疲力尽。

Superoxide radical (O2-) is produced intracellularly as a consequence of aerobic metabolism and extracellularly by leukocytes in response to infection.

超氧自由基会在细胞有氧呼吸或者白细胞抵御感染的过程中产生。