11.   But chemical companies eventually learned that the polyester fiber could be stretched into a very thin, very clear, but highly impermeable and resilient product.

12.   But often, companies are learning, money is just the tip of the iceberg.

13.   But once Japanese companies learn how to turn their networking abilities into competitive advantages, they could reap larger gains than western firms have done.

14.   But one thing that companies will learn is that retailing is not easy.

15.   But the company recently learned that its run in the flower district will come to an end this summer.

16.   But workers, already with more than enough to worry about, will be affected as companies learn how to air-drop new operations into cheap labor markets.

17.   By definition, a job interview is an opportunity for the company to learn more about you, and for you to learn more about it.

18.   Cable companies have learned that lesson as they have tried to upgrade their coaxial networks to carry telephone calls.

19.   Car companies are fast learning that they need to change the way they do business.

20.   Companies have learned another lesson.