Fees System的用法和样例：
例句
- It should be noted that under a pure effluent charge system there would be no requirement that a polluter limit his discharges at all.
应该注意到，一个纯粹的污水排放收费制度可能不会规定污染者限制自己的污水排放。 - Like these penalties, existing effluent charge systems in other countries involve fees on discharges in excess of fixed effluent standards.
像这些惩罚一样，其他国家现行的污水排放收费制度也涉及到超过特定污水标准收费问题。
