Muscle performance can also be affected by a phenomenon called "central fatigue", in which an imbalance in the body's chemical messengers prevents the central nervous system from directing muscle movements effectively.
2017年6月四级真题（第三套）阅读 Section A
This help is critically important because the high cost of caring for animal victims is a major factor that prevents people from getting involved in cruelty cases in the first place.
2016年12月四级真题（第三套）阅读 Section A
英语六级真题
They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.
2018年6月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
防止；预防；阻止
To prevent something means to ensure that it does not happen.