First, he had to establish his credentials as a researcher.
首先，他得证
自己做调查员的资格。
;
,信赖,鉴定合格;书, 执照;,鉴定;
件;是真实的、可靠的或有效的;
,
证;First, he had to establish his credentials as a researcher.
首先，他得证自己做调查员的资格。
The ambassador presented her credentials to the monarch.
外交官将她的证书呈交国王。
声：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
