物价随季节而变化。
Temperatures vary with the season.
气温随季节变化。
Conclusion the density and population of flies vary with the season and breeding environment, with temperature, the breeding environment and the control measures being the major influencing factors.
结论不同季节、不同生态环境的蝇类密度和种群均有差异，气温、孳生环境、防治措施是主要的影响因素。
Conclusion the density and population of flies vary with the season and breeding environment, with temperature, the breeding environment and the control measures being the major influencing factors.
结论不同季节、不同生态环境的蝇类密度和种群均有差异，气温、孳生环境、防治措施是主要的影响因素。
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