Otherwise, you can add controls to an existing form.

否则，您可将控制项加入至现有表单。

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Now that we have the layout setup all we need to-do is add controls to it.

现在我们已经完成了布局，接下来要做的是向其中添加控件。

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The design surface is a visual area where you add controls to create a user interface.

设计图面是一个可视区域，您可以在此添加控件以创建用户界面。

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Cars are loading up on their chip content overall, and commercial developers and homeowners are beginning to add energy-smart building controls that rely on semiconductor content.

FORBES: Greenhouse Stocks

To add to the protection afforded by capital controls, it will surely discourage the idea that the yuan's appreciation will be steady and speedy.

ECONOMIST: The yuan and global imbalances

Does all this add up to federal legislation on mandatory controls?

ECONOMIST: Doing it their way