虽然这些新生指南手册，能够提供一些适应于特定环境的具体技巧。 环境随时代变迁而变化，但是这变化过程却是非常缓慢的。

They can,however, offer specific tips which are useful in the right circumstances, and these, too, change little with the years.

youdao

虽然这些新生指南手册，能够提供一些适应于特定环境的具体技巧。 环境随时代变迁而变化，但是这变化过程却是非常缓慢的。

They can,however, offer specific tips which are useful in the right circumstances, and these, too, change little with the years.

youdao