倘若一个用户想要通过合法手段提交无效请求，这可以给您一些显示控制。
This gives you some control over presentation in the event that a user manages to submit an invalid request via legitimate means.
私有企业通过合法手段“寻租”，其实质是追逐类似于级差地租的级差收益。
Private enterprises seek rents by legal means. In fact they are chasing the differential incomes similar to differential rents.
通常上市公司只能提供公众信息，或者可以通过合法手段推测出的市场细节（业内人士通常称之为”市场脸色”）。
The firms are supposed to provide only details that are public, or can be found out legally (“market colour” is what people in the industry call it).
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