官员们承认，尽管他们的清理工作仍在中国水的水质尺度的最低等级，不适合人类接触，而今年的另一个“大花”是可能的。
Officials admit that despite their clean-up efforts the water remains at the lowest grade in China's water-quality scale, unfit for human contact, and that another "big bloom" is possible this year.
规划控制的放松导致了各种尺度上生产要素的变动性，而且造成了维持社会等级组织的巨大困难；
The loosing of planning control results in the mobility increase of production factors at different levels and brings about tremendous difficulties in maintaining the social hierarchies.
在生态系统完整性原则下，定义系统、系统边界、系统等级和认识生态系统的尺度。
Under this principle, we defined the system, the boundary of the system and the organizational Ievels of the system, and also defined the scale at which the ecosystem was to be examined.
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