研制了一种性能优异的易切削铋黄铜来替代有毒的铅黄铜.An environmental friendly Bi - brass with cutting - free and excellent properties was developed to substitute for Pb - brass....
I'm terribly squeamish. I can't bear gory films.我非常容易受到惊吓。我受不了暴力血腥的电影。Spare me the gory details.别给我讲那些骇人听闻的细节了。the gory task of the pathologist病理学家带有血腥味的工作...