萘是一種無色具有芳香味兒的化學品，廣泛應用于石油化工、染料、香料、醫藥等領域。下面，我將為大家介紹萘的主要用途。

Naphthalene is a colorless and aromatic chemical widely used in fields such as petrochemicals, dyes, spices, pharmaceuticals, etc. Next, I will introduce to you the main uses of naphthalene.

首先，在石油化工領域，萘用作石油裂解氣的加工劑，生產對苯二酚、環己烷等產品。

Firstly, in the field of petrochemicals, naphthalene is used as a processing agent for petroleum cracking gas, producing products such as hydroquinone and cyclohexane.

其次，在染料和香料領域，萘是生產蒽醌、聯苯胺等染料和香料的關鍵原料。此外，萘還可以作為染料中間體和香料的生產原料。

Secondly, in the field of dyes and fragrances, naphthalene is a key raw material for producing dyes and fragrances such as anthraquinone and benzidine. In addition, naphthalene can also be used as a raw material for the production of dye intermediates and spices.

最后，在醫藥領域，萘作為一種抗氧劑，被廣泛應用于醫藥、化妝品等領域。

Finally, in the field of medicine, naphthalene, as an antioxidant, is widely used in fields such as medicine and cosmetics.

總之，萘在各個領域都有廣泛的應用，是一種非常重要的化學原料。

In summary, naphthalene has a wide range of applications in various fields and is a very important chemical raw material.