- There has been serious pollution since industrialization.
- Serious pollutions in modem cities give some cause for concern.
- Setting off firecrackers makes a tremendous noise and causes serious air pollution.
- During irrigation period, the backflow from the farmland pollutes the branch.
- Rape several women or have sexual relations with several girls
- This assumption is false in several ways.
- It comes with several inbuilt features.
- The storm caused severe drifting.
- The engine misfired several times.
- contamination activity
- To contaminate;taint.
- To taint;contaminate.
- particulate contaminant
- trace contaminant