The army apparently refused point-blank to do what was required of them.

军方显然直截了当地拒绝了对他们提出的要求。

《柯林斯英汉双解大词典》

One way to provide this is to allow the user to leave the parameter value blank; the report then interprets a blank parameter to mean no filtering is required on that parameter.

提供这个功能的一种方式是允许用户将参数值留空；然后，报告将空白的参数解释为不需要对那个参数进行过滤。

youdao

This may be in the form of Null values or other blank value conditions (for example, Spaces) in situations where the data is required.

如果数据是必需的，这可能以null值或其他空白值(例如空格)的形式出现。

youdao

Couriers are barred by law from using their computers while driving, and FedEx is required to blank the screen whenever a delivery van is in motion.

FORBES: FedEx Bites Into Bluetooth

And indeed, rather than back radical alternatives, 19% of the electorate cast blank or spoilt ballots, or, though voting is required by law, simply stayed at home.

ECONOMIST: Argentina