If it's not available, you know that the request is made through a regular form post, and you should serve back a full page.

如果该字段无法获取，则表明请求是通过一个常规表单提交发出的，您应该返回一个完整的页面。

youdao

The economy that study abroad assures common form is regular cash deposit , at present enterprise bond, stock, house property, car has not been approbated by most state institute.

留学的经济担保一般形式是定期现金存款，目前企业债券、股票、房产、汽车已经不被大多数国家所认可。

youdao

The economy that study abroad assures common form is regular cash deposit, at present enterprise bond, stock, house property, car has not been approbated by most state institute.

留学的经济担保一般形式是定期现金存款，目前企业债券、股票、房产、汽车已经不被大多数国家所认可。

youdao

Facing one of her toughest-ever fields, including her old foe Hay List, admittedly not the force he once was, and the in-form Bel Sprinter, Black Caviar's regular rider Luke Nolen had to jockey for position in the early stages as he sought to overcome an unfavorable inside draw.

CNN: Black Caviar scores her quarter century