But testing against human factors, creating use cases, and observing focus groups can prove to be a costly endeavor for even the largest of companies.
但是测试用户行为，建立使用案例，以及跟踪核心用户群需要很多的费用，即便是大公司也是如此。
2
It is no use to have the sort of liking that consists in regarding them as a field for valuable social endeavor, or — what amounts to the same thing — as an outlet for power-impulses.
那种坚持把孩子们当成社会事业中有价值的一部分，或者——实质相同——权力冲动的宣泄口的喜爱毫无用处。
3
I am willing to use my endeavor, the good point of view alleviates withstands the pressure!