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The calotype was revolutionary in its use of chemically treated paper in which areas hit by light became dark in tone, producing a negative image.

卡罗摄影法对化学处理纸的使用是革命性的，其中光照区域色调变暗，形成负像。

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The meat is chemically treated to extend shelf life.

猪肉经过化学处理以延长保存期。

《柯林斯英汉双解大词典》

These include vaccination campaigns and the use of bed nets chemically treated to kill mosquitoes that spread malaria.

VOA: special.2009.09.28

This metal form is chemically treated before being covered with ink and then pressed onto paper.

VOA: special.2009.09.02

Most florists' blossoms have been chemically treated and are not safe to eat.

WSJ: Petal Pushers: Chefs Pick Edible Flowers

Police said they will use chemically treated dipstick cards to check drinks.

BBC: Liverpool Mathew Street festival-goers' drinks tested

Unlike the normal gas extraction, chemically treated water is forced upon the rock underground to fracture it releasing the gas in the process.

FORBES: Chesapeake Stock Drilling Its Way To $35