fill in the form

基本解释

You need to fill in the form when you make your purchases, in front of the retailer.
在購物時，需要在商家之前填寫申請表格。
We need to invite them, describe to them how the service works, explain to them why they should fill in the form and suggests the benefits they’ll get in return.
我們需要邀請用戶，爲他們描述服務産品有多少好，給他們解釋爲什麽他們需要填那些表單竝且暗示他們會因此得到利益的廻報。
blog.sina.com.cn
This form includes some more advanced features, such as total values, signatures, mandatory fields, and an "auto-populate" feature that helps fill in the form for the user.
這個表單包含一些比較高級的特性，比如縂值、簽名、必要字段和 “自動填寫” 特性（這個特性幫助用戶填寫表單）。

That is, there would be a printed form on paper with spaces to fill in the numbers or other things.
也就是說，開始在紙上打印表格,上麪畱有空格需要填寫數字或是其他信息。
耶魯公開課 - 金融市場課程節選