stained due to

This paper aims at providing guidance to the choices of painting for the coating project on the inner surface of tunnels on highways, in terms of four aspects as follows: the investigation of present conditions, collection of samples, analysis of compositions and deduction of sources of the dark blot conditions in tunnels.

通过隧道内污渍状况的现状调查、试样采集、组分分析和污渍发生源推定 4项内容 ,对公路隧道内饰涂装工程的涂料选择提供指

A discolored spot, smudge, or area; a stain.

变色点，污渍，污处，污迹

Bleach, sterilize, remove stains

漂白、消毒、除污渍

A spot or blotch of color.

斑点有色的污点或污渍

clear from impurities, blemishes, pollution, etc..

去除杂质污渍污染等。

To spill or spread in a spot or stain.

（污点或污渍）溅出或蔓延

Examines the stain)Is it soy sauce,sir?

（检查那些污渍）是酱油渍，对吗？

work wonderfully in removing stains

去除污渍，效果显著

an immaculate tablecloth;

一件无污渍的桌布；

This silk will spot.

这丝绸会沾上污渍的。

She bleached the stains out (of the cloth)

她漂去了(布料上的)污渍。

having a coating of stain or varnish.

具有污渍或油漆被覆的。

I took out stains from my clothes.

我去掉了衣服上的污渍。

This detergent can remove stubborn stains.

这种去污剂能去除难洗的污渍。

This famous household cleaner works wonderfully in removing stains.

这种名牌去污剂，去除污渍，效果显著。

To rid of impurities, blemishes, muddiness, or foreign matter.

使完美去除杂质、污渍、污泥或外来事物

To get rid of impurities,blemishes,muddiness,or foreign matter.

去除杂质、污渍、污泥或其它杂物

This silk scarf spots easily.

这块丝绸围巾容易沾上污渍。

Dirty,gray spots showed where the paint hadflaked off.

灰色的污渍显示出油漆剥落之处。