The right position of Adverbs

是要翻嗎??
如果翻中文的話是應該是這樣!

一天, 然而, 科學家的當中一個決定減少"海豚談話的" 錄聲磁帶的速度。對於他的意外, 他發現, 口哨和點擊, 以慢速, 聽起來更多像人的聲音。


我想知道何處副詞的正確的位置應該它投入了? 作為樣品上面: 我發現了副詞"然而" 甚至"然後" 經常被投入繼續被主題或在begining 句子。

In fact, the 'however' can both be put in the beginning of the sentence, or be put after a subject or other suitable words.
For example, you can write
' He shouted at her. However, she just ignored him. '
OR
' He shouted at her. She, however, just ignored him. '

Sometimes, the key point is that,
the ' however ' , ' then ' , ' therefore ' , etc.,
can be put according to your own will, in the front or after some words,
but I always make a decision depending on
which way I can say the sentence more fluently.

Also, the change of the position of these words can prevent the
sentence from being boring.
Like, avoid using these connectives in the front every time. Just like your
sentence , the ' however ' follows other words.

Hope it is clear enough!