a concern for短语⁵⁷⁶⁴⁷ 基本例句 关注 Even social concern was exclusively a concern for material welfare. 尽管整个社会所关注的仅仅是物质福利。 www.1x1y.com.cn Styrene is mostly a concern for workers who build boats, car parts, bathtubs and shower stalls. 苯乙烯主要是造船工人、汽车零件制造工作以及浴缸有及洗浴间建造工作应该担扰的。 yeeyan