这个工具在许多领域大有用处。
人际构建不仅在商业世界中大有用处而且会让在尝试结交新朋友时游刃有余。
Relationship building is useful not only in the business world but also when you are trying to meet new people.
社交网站上在线朋友成千上万，这些节省下来的时间是可以积少成多、大有用处的。
Considering the hundreds of online friends people tend to accumulate on these social networking sites, those time savings really add up.
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