The response demonstrates the effective use of grammar and vocabulary.

（学生的）回答有效运用了语法和词汇。

An effective use of an architect is as a consultant to the individual executive assistant teams.

要想让架构师发挥有效作用，就把他作为一个单独行政助理团队的咨询顾问。

The response demonstrates fairly automatic and effective use of grammar and vocabulary, and fairly coherent expression of relevant ideas.

回答中呈现了相当自然有效的语法和词汇的使用，相关观点的表达也十分连贯。

I admire the effective use of colour in her paintings.

我很欣赏她绘画作品中的色彩效果。

Writing effective use cases.

编写有效的用例。