So she's staring at this customs form, she's like doing maths and flowcharts in their mind.

然后她紧盯着海关申报表，就好像正在思考数学题、建各种表格。

You have to fill out your customs form when you come to the United States.

。 当你来到美国时， 你必须填写你的海关表格。

At the  Polish airport, he will hand the pills to the couple who are on the customs forms as, like,   the receivers.

在波兰机场，他会将药丸交给海关表格上的一对夫妇，就像收件人一样。