n.前缀(缀于单词前以改变其意义的字母或字母组合)，前置代号(置于前面的单词或字母、数字)，(人名前的)称谓
vt.在…前面加(字母或数字)

原形：prefix复数：prefixes

Preheat the oven to 350 degrees Fahrenheit.
预热烤箱至华氏350度。
Preface the report with a brief summary of the findings.
在报告前附上调查结果的简短摘要作为前言。
The pre-existing condition made him ineligible for the insurance coverage.
他之前已存在的健康状况使他不符合保险覆盖的资格。
The prefix "un-" in "unhappy" reverses the meaning of "happy".
“不”在“unhappy”中作为前缀，逆转了“happy”的意义。
Prehistoric humans hunted for their food.
史前人类猎取食物。
The conference will precede with an opening ceremony.
会议将以开幕仪式开始。
The prenatal checkups are essential for the health of both mother and baby.
产前检查对母亲和婴儿的健康至关重要。
The prefix "multi-" indicates many or multiple.
前缀“multi-”表示许多或多重。
The premonition she had was unsettling.
她的预感令人不安。
The company decided to preprocess the data before analyzing it.
公司决定在分析数据前先进行预处理。