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月四級真題（第三套）閱讀 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月四級真題（第三套）閱讀 Section A
英語六級真題
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月六級真題（第一套）閱讀 Section B
柯林斯高階英漢雙解學習詞典釋義
VERB
防止；預防；阻止
To prevent something means to ensure that it does not happen.