树形模型是表示一个语言家族的发展并显示两种或更多语言的密切相关程度的一种便捷方式。
The tree model is a convenient way of representing the development of a language family and of showing how closely related two of more languages are.
近年来家族企业日益成为大家较为关注的对象，这是和其近年来不断发展壮大，在整个国民经济中所占的比重和地位不断提高有关的。
Family business has gradually drawn our attention in recent years, which results from its continual development and its proportion and status' constant improvement in national economy.
我国家族企业经过20多年的长足发展，其规模和效益得到了不断的扩大和提高。
Household enterprises in China have developed more than 20 years. Sizes and profits of them have been expanded and improved.
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