competitive effect的用法和樣例：
例句
- When a pure line variety is grown at close spacing there is a competition effect.
當一個純系品種在密的植距下生長時有一種競爭效應。 - This paper develops a simple model in which we examine the effect of competition and productivity spillover on the industrial development in the host country.
本文構建了一個簡單的理論模型考察跨國公司的競爭效應和生產率外溢對東道國產業發展的影響。
