1.先前的；在前的；在先的
You useprior to indicate that something has already happened, or must happen, before another event takes place.
e.g. He claimed he had noprior knowledge of the protest...
他声称自己事先并不知道这次抗议的事。
e.g. The Constitution requires the president to seek theprior approval of Congress for military action...
宪法规定总统在采取军事行动之前必须获得国会同意。
2.（所有权、责任）更重要的，优先的
Aprior claim or duty is more important than other claims or duties and needs to be dealt with first.
e.g. The firm I wanted to use hadprior commitments.
我想选用的这家公司已有约在先。
3.小修道院院长；大修道院副院长
Aprior is a monk who is in charge of a priory or a monk who is the second most important person in a monastery.
4.在…之前；先于
If something happensprior to a particular time or event, it happens before that time or event.
e.g. prior to his Japan trip, he went to New York...
在去日本之前，他去了纽约。
e.g. A man seen hanging around the areaprior to the shooting could have been involved.
在枪杀案发生之前，有人目睹一位男子在这附近游荡，该男子可能与此案有关。
1. 优先：这是为了保护装入模块列表(sys.modules)来优先(prior)执行CGI脚本,然后在脚本执行后对比导入模块. 除了一些__file__属性指向标准Python库的模块外,将会被在sys.modules中删除来强制Python在下次CGI脚本导入时再次装入他们.
2. prior
2. 预先：而后者是指基本的证明标准应是固定不变的(fixed) ,但证据的程度(degree of evdience)应依据事项的重要性的不同来确定,因为其认为越是重大事项,发生的盖然性就越低,所以盖然性程度预先(prior) 就决定了(3).
3. 先：注意req.headers_out将会被优先(prior)设置,并也会影响req.status的值,假如不是返回apache.OK. 从客户端读取最多len字节的数据,返回字符串数据. 如果len为负数(negative)或者缺省(omitted),则读取所有的数据.
4.
4. 在先：一个商标要获得注册(registration)必须首先具备显著性(distinctiveness),能够区分商品或服务的来源(source),并且与他人在相同(identical)或类似(similar)商品在在先(prior)注册的商标不相同或近似.
