We shall have to refine on our methods of advertising.

我得进一步改进广告的方法。

A manufacturer can amplify the demand of a product by advertising widely.

厂商广告的方法来扩人对产品的需求。

They advertised their goods.

他为他的商品广告。

Are lawyers allowed to advertise?

准许律师广告吗?

Advertising is my department.

我广告。