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The developing brain, the report says, is particularly vulnerable to the toxic effects of certain chemicals these products may contain, and the damage they cause can be permanent.
报告说,正在发育的大脑特别容易受到这些产品里可能含有的某些化学物质的毒性影响,而这些化学物质造成的损害可能是永久性的。
Taking and developing photos using the so-called "wet-plate" process was a meticulous, multi-step procedure that required more than one "camera operator" and lots of chemicals and equipment.
以用被称为“湿盘法”冲洗照片为例,这一步骤需要多名照相操作员一丝不苟的进行繁复的操作,其间需要许多化学试剂和器材。
He can't find the chemicals he needs to do the developing even though he drove to four stores in town.
尽管他开车在市里找了四家店也没找到用来冲洗照片的化学药剂。
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