美 [ˈsʌbdʒɪkt fiːld; ˈsʌbdʒekt fiːld]
学科领域：一个特定的知识或技能领域，通常在学术、职业或兴趣方面。
a branch of knowledge
同义词： discipline / subject / subject area / field / field of study / study / bailiwick / branch of knowledge
User 的证书subject field （主题域）应该（SHOULD ）是user 的目录条目的名字，并且CA 必须被已经发布了该证书的目录服务器完全信任，目的是为了服务器能够处理该证书...
... subject 话题 subject field 专题领域 bailiwick 市镇官管辖区...
You must enter text in the Subject field.
您必须在“主题”字段中输入文本。
This reference is to the subject field on the main form.
此引用针对主表单上的subject字段。
The subject field will include a short description of the standard response document.
主题字段将包括标准回复文档的简短描述。
Throwing the subject in to a wider field.
他们越说越离谱。
1945年后的美国小说课程节选 : 耶鲁公开课
In the subject field of the email, you will need to add a password alongside with the name of your school, for child protection reasons.
Your mail-handling software would scan each message to see if either the sender's name could be found in your personal directory or a magic word could be found in the subject field.
If they understood that a critical piece of the lock was subject to a magnetic field, then why did they not design it differently?