The mx:Panel control is a container control that is used for layout purposes.

Panel 控件是一个用于布局的容器控件。

youdao

The parent object of the form is the outer container control that has the runat attribute set.

表单的父对象是一个具有runat属性的总容器控件。

youdao

If a non-container control (TextBox, for example) is placed outside the form tag, an HttpException is thrown at run time (no check is made for this at compile time).

如果一个非容器控件（比如TextBox）被放置在form标记之外，将会抛出一个运行时错误（编译时不会对此进行检查）。

youdao

What happens in many poor neighborhoods is that a small group takes control of the water kiosk or communal tank and sets its own tariffs for the water it sells by container.

VOA: standard.2010.08.04

The authorities say the smoke was caused by a fire in a container with pesticides at the city's port, but the situation is now under control.

BBC: Chinese pesticide cloud alarms Buenos Aires