The production and use of carbon black workers, such as long-term sucked soot dust can produce carbon black pneumoconiosis.
生产和使用碳黑的工人，如长期吸人碳黑粉尘可发生碳黑尘肺。
One day, some workers in the zoo noticed a black cat was in the bear's cage, and the two animals were playing together peacefully.
一天，动物园里的一些工作人员注意到一只黑猫在熊的笼子里，两只动物正在和平地玩耍。
To sell power tools to construction workers these days, you need Spanish-speakers, he says; to market black hair products, you want African-American staff.
在卖电动工具给建筑工人的那些日子，就需要会西班牙语的雇员；在卖黑发产品时，就需要非裔美国人。
Mr Black recalls workers in Texas in the 1960s earning $3 an hour and complaining loudly about the deductions from their pay packets.
布莱克先生回想起，在二十世纪六十年代德克萨斯工人每小时收入为三美元，并且高声抱怨对他们的征税。
In 1972 the American National Association of Black Social Workers insisted that families "of African ancestry" should be kept together.
1972年，全美黑人社工联合会认为非洲裔家庭应该保持完整。
The scene of a similar smell the smell of asphalt, a few rescue workers to the oil tanker is the black liquid transferred to another on an oil tanker.
现场散发着一种类似沥青的味道，几名营救人员正将油罐车内的黑色液体转移到另外一辆油罐车上。
The scene of a similar smell the smell of asphalt, a few rescue workers to the oil tanker is the black liquid transferred to another on an oil tanker.
现场散发着一种类似沥青的味道，几名营救人员正将油罐车内的黑色液体转移到另外一辆油罐车上。
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