# 例句
1、Myprincipalconcern is my family's welfare.
我至为关心的是我一家的幸福。
2、The agent spoke on behalf of hisprincipal.
代理人代表他的委托人说话。
3、How much interest will there be on aprincipalof $5000?
5000美元本金的利息是多少?
4、Keys are available on application to theprincipal.
向校长申请就可得到钥匙。
5、I will have to consult myprincipalsbefore I can give you an answer on that.
我必须同我的委托人磋商后才能就这个问题给你答复。
6、My wages are theprincipalsource of my income.
薪金是我收入的主要来源。
7、Ourprincipalproblem is lack of time.
我们的主要问题就是缺少时间。