He makes such a racket I'm afraid he disturbs the neighbours.他如此大声喧闹,我怕他打扰了邻居。The child continually disturbs the class.那孩子老是扰乱课堂秩序。I don't feel I'm being bold, because it's always been natural for me ...
它可提高流度和其他铸造性能.It improves fluidity and other casting properties.该床层的流度将接近于最小最小颗粒的流度.The fluidity of such beds is near to that of the smallest particles....