[] () in the Boston Matrix , a product that has a small market share in a market that is growing very little瘦狗（波士顿矩阵中市场份额较小且增长率很低的产品）➡ picture at Boston Matrix () used to describe sth that is very bad or a failure, especially an investment that always does badly蹩脚货；失败的投资◆If you have bought a dog fund, be brave and get out!如果你买了支烂基金，大胆撤出！◆It's been a dog of a year.这是一年来最差的投资。●(a case of) ˌdog eat ˈdoga situation in business, politics, etc. where there is a lot of competition and people are willing to harm each other in order to succeed狗咬狗；残酷无情的竞争；互相残杀◆I'm afraid in this line of work it's a case of dog eat dog.恐怕这一行的竞争是残酷无情的。◆We're operating in a dog-eat-dog world.我们在残酷竞争的世界中经营。●eat your own ˈdog food () () when a company tests or uses its own software products in the organization自产自用（公司在内部测试或使用自己开发的软件）●go to the ˈdogs (NAmE alsogo to hell in a ˈhandbasket) () to get into a very bad state败落；大不如前◆This firm's gone to the dogs since the new management took over.新管理层接手后，公司就衰落了。●that dog won't ˈhunt () () used to say that an idea will not work（想法）不可行的top dog