technique

我学会了一种提高写作技巧的有用方法。

I've learned a useful ___technique for improving my writing skills.

我学会了一个更有效组织学习时间的有用技巧。

I learned a useful ___technique for organizing my study time more efficiently.

我们开发了一种检测制造过程中错误的新技术。

We have developed a new ___technique for detecting errors in the manufacturing process.