You can start with a pulldown menu of authors.

首先创建一个可以选择作者的下拉菜单。

The author pulldown is a little bit more complicated.

作者下拉列表稍微复杂一些。

Suppose a radio button is changed to a pulldown list.

假设一个单选按钮改变为下拉列表。

The same code has been added for the category pulldown.

类别下拉列表也添加了相同的代码。

First, it can be a by-product of the 3:2 pulldown conversion.

首先，它可以是一个按3：2下拉的转换产品。