为什么要翻译补偿，翻译补偿的作用？用英语回答，答得好有高分相送

Untranslatability is a property of a text, or of any utterance in one language, for which no equivalent text or utterance can be found in another language.Thus there's a need for compensation in traslation or compensatory translation.More details to come:
The problem of untranslatability is always a disputed issue. Nowadays, it is well accepted that translation is a possible and feasible task. However, there are still some language points that are difficult to translate, which is called the phenomenon of untranslatability.
Linguistic and cultural differences, the two categories of untranslatability phenomenon are caused by different factors. These resulting from the linguistic differences will hardly change while those resulting from cultural differences may become translatable in the future by using the methods of compensation and the skill of translators.
Compensation is a special method that is used to reach the equivalence when there is no equivalent concep