外链是搜索引擎发现新页面并判断其“权威”的方式。 在没有外链的情况下，很难对有竞争力的关键词进行排名。 rank someone/one thing as one thing Forty-five per cent of respondents ranked well being as their number one priority. rank - placement in a very social hierarchy; "the British are more aware of social status than Us residents are" come in, appear out, area - get a spot https://212.71.233.43