economic effection的用法和樣例：
例句
- Dry machining technology is a fundamental solution to the environmental and economic problems caused by cutting fluids.
解決切削液帶來的環境及經濟效應的根本方法就是干切削加工技術。 - The super large-scale cities have imponderable advantages on economic scale effect and population gathering.
超大型城市在規模經濟效應和人口集聚效應上具有不可比擬的優勢。
