无障碍式轨道，可实现真正意义的无门槛，开启轻便灵活。
Obstacles-free rails can realize "no threshold" in a real sense to make it flexible for opening and closing.
有氧代谢切换到无氧代谢的强度，通常，被称之为无氧门槛或者乳酸门槛。
The point at which aerobic metabolism gives way to anaerobic metabolism is commonly referred to as Anaerobic Threshold or Lactate Threshold.
乳酸门槛还被称之为无氧门槛(AT)。
Lactate Threshold can also be referred to as Anaerobic Threshold (at).
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