Second, it will help protect the inlays, purflings, and the rosette from color contamination due to the oils and dyes in the back and sides of the classical guitar.

其次，它会保护镶嵌，内饰线和音孔饰圈等不会相互染色，特别是来自背侧板的油脂和颜色。

youdao

Findus said a letter from Comigel dated February 2 informed Findus that the contamination may date back to August 2012.

CNN: Battle over blame after horsemeat found in beef products

These New Yorkers have seen other communities in neighboring states like Pennsylvania run over by an industry that promised them heaps of cash, but instead the communities report groundwater contamination, contaminated flow-back waste, road-ripping truck traffic and clouds of cancer-causing chemicals.

CNN: Don't let America get 'fracked'

With cession of purging, the conditions at the site will return back close to what they were when the contamination first spread.

FORBES: Responsible Investing: Is Pall 'Leading' in Water Filtration? (Governor Snyder's Hometown has a 1,4 Dioxane Problem)