Soil erosion and agricultural area-source pollution are commonly existed phenomenon.

土壤侵蚀和农业面源污染是普遍存在的一种现象。

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Tourism is a major source of income for the area.

旅游业是这个地区的主要收入来源。

《牛津词典》

The element-geochemical features reflect that hybridism of continental crust occurs in the source area.

元素地球化学特征反映了陆源地壳杂化。

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Just last month, more than 10, 000 dead pigs from an unconfirmed source were fished out of Shanghai-area waters of the Huangpu River.

FORBES: Shanghai Discovers Two More Cases Of Deadly Bird Flu; More Poultry Markets Shut

Veolia Environmental Services was the other firm fighting to run the incinerator, and whose spokesperson said it believed it was "sympathetic with the local environment and represented a unique opportunity to use the residual waste to provide a secure source of sustainable energy and heat to the neighbouring Tata Steel steelworks - a major source of employment in the area".

BBC: Artist's impression of a Viridor plant in Cardiff

The lengths to which Mr Mugabe and his party are prepared to go to keep a lock on this new-found source of wealth were exemplified by the arrest on June 3rd of Farai Maguwu, head of a Marange-based NGO and a first-class source for what is going on in the area.

ECONOMIST: Zimbabwe's diamonds