单语范例（未经PONS编辑处理）
英语
- Regular sampling of rivers should be performed with seines and electoshockers to be able to understand the assemblage of fish within rivers that may become threatened due to human activity.en.wikipedia.org
- Regular sampling should be done at various places to check the water quality.www.hindustantimes.com
- Regular sampling at well sites would show if the injected water meets drinking standards.www.news1130.com
- Regular sampling of the water from the intake has shown no exceedences of contaminants since the 1980s.en.wikipedia.org
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英语