无论使用何种系统，除非您已经做了优惠券促销并可以计算出优惠券的数量，跟踪是评估广告有效性的唯一办法。

Whatever system you use, unless you've done a coupon promotion and can simply count the number of coupons redeemed, tracking is the only way you can assess how effectively your advertising is working.

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2009年伯奇创办自己的基金会，宣布入盟者用最优惠的加盟费这一办法来帮助美国贫困的妇女。

In 2009 Burch launched her own fou.dation to economically empower poor women in the United States through microfinancing.

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他们主要靠国家补助和优惠存活，但是这终究不是办法。

They are kept alive by state subsidies and preferences, but there may come a day when this is no longer the case.

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