tā / zài / zhá gāng chǎng / gōng zuò / le / shí nián / duì / gāng cái / shēng chǎn / fēi cháng / shú xī

他在轧钢厂工作了十年，对钢材生产非常熟悉。

He has worked at the steel rolling mill for ten years and knows steel production very well.