1.stay flat 保持不变，毫无起色

The sales volume of our new products stays flat although we have poured large sum of money into our advertising campaign.

The revenue of Rainbow Advertising Agency keeps climbing up while that of their major rivals stays flat over the past two years.

2.line （产品的）类型，种别

Our company has a nice line in cosmetics.

GM Shanghai is experimenting a new line of energy-saving cars.

3.brief n.摘要，陈述（课文中指广告商要求广告代理达到的目标陈述）

This is a brief of our advertising case in hand.

Please brief the panel on the advertising campaign you have initiated.

4.on a monthly/weekly/daily basis 按月/周/天，每月/每周/每天

Media commission is charged on a monthly basis of our customers in the case of fee-commission combination.

We negotiated with our business counterpart on a daily basis for two weeks.

5.in proportion to 相对于某物来说，与某物成比例

Our advertising budget is not in proportion to R&D investment.

We charge reasonable media commission,which is in proportion to total media expenditure.