Improve methods

• 方法改进

Improve methods的用法和样例：

例句

1. Instead, they have adapted their traditional coercive mechanisms with more subtle methods.
   取而代之的是，以许多微妙的方法改进了传统的高压机制。
2. An effective depth to time domain transforming method is presented to improve normal sample method.
   提出了一种有效的对常规采样方法改进的深时转换方法。