There is no environmental science without the close combination of theory and practice.
没有理论与实践的紧密结合，也就没有环境科学。
A combination of internal and external factors caused the company to close down.
内外因结合导致了公司的倒闭。
The combination of health clinic is the demand of MCH function. They maintain close ties.
保健与临床相结合，是妇幼保健功能的要求，两者联系密切、相辅相成。
The combination of health clinic is the demand of MCH function. They maintain close ties.
保健与临床相结合，是妇幼保健功能的要求，两者联系密切、相辅相成。
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