内部循环和厚层泥土的缺乏导致动植物稀少，无法创造真正的微气候环境。
The quality of water is really bad, lack of inner current and thick layer of mud prevent valuable flora and fauna from creating an actual micro-cosmos.
血管横向阻抗是血液动力学的重要参量之一，但人们对横向阻抗的研究却相当缺乏，相关的实验数据也很稀少。
The arterial transverse impedance is an important hemodynamic parameter, but studies and experimental results on which are much lacking.
血管横向阻抗是血液动力学的重要参量之一，但人们对横向阻抗的研究却相当缺乏，相关的实验数据也很稀少。
The arterial transverse impedance is an important hemodynamic parameter, but studies and experimental results on which are much lacking.
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