英语语法分析

Generating new products takes time.

生成新产品需要时间。

Two factors appear to be generating the cycle: food plants and predators.

产生这种循环的因素有两个：食用植物和食肉动物。

Alfred Marshall is quoted to indicate the conditions for generating quick profits.

援引阿尔弗雷德·马歇尔的话是为了说明快速产生利润的条件。