If the CMD parameter is add, an empty field is added at the end of the returned HTML string.

如果cmd参数为add，则在返回的HTML字符串的尾部添加一个空字段。

youdao

MICHAEL HALBHERR was driving from Berlin to Budapest the other day when he passed what looked like an empty field.

迈克哈勃前几天从柏林开车到布达佩斯，经过了一片看上去像是片空地的地方。

youdao

If values for these fields are not provided, you might get an error message such as error 9508 - Certificate Signing Request contains empty field (s).

如果没有提供这些字段值，您可能得到错误消息，例如：Error 9508 - Certificate Signing Request contains empty field (s)。

youdao

soon she may have to send her guests to live in an empty field nearby, because she cannot bear to look them in the eye when they go hungry.

VOA: standard.2010.03.22

If you pave an empty field, drivers will park in whatever way is most convenient for them but that in aggregate can turn out to be random, confusing, and at times, dangerous.

FORBES: Connect

An empty field outside the site was earmarked.

BBC: Stevie Wonder thrills Glastonbury Festival

Hundreds of men were held in this now empty soccer field.

CNN: U.S. spy photos show mass graves