英语语法分析

Those produce a large number of faint reflections in what's called as: a smooth of echo.

这些（松针并不茂密的松树）能产生大量微弱的反射，我们称之为“平滑回声”。

Those private reflections may have historical significance long after the author's death.

这些个人反思在作者死后很长一段时间内可能仍具有重要历史意义。

So, the echoes from a tree are going to a mass of chaotic acoustic reflections, not like the echo from a moth.

所以，树的回声会是一团混乱的声波反射，而不像飞蛾的回声那样。