困难的问题以前总是需要用笔和纸工作数小时.Difficult problems used to take hours of work with pencil and paper.请你把那个记一下, 好 吗 ?(指用笔或在脑中记下来)Please make a note of that, will you ?他的线描是彩色的, 他的用笔也是彩色的.His line drawing is of color, his pencraft is ...
In this paper , the fractal theory of floc structure is briefly addressed.絮体结构和强度特征是絮凝过程的重要参数.Compared with box counting method , the proposed method avoids jumpiness of calculated fractal dimensions.较之盒维数算法, 避免了计算分数维数值的...
...competitions in rowing, swimming and water skiing.划船、游泳和滑水比赛Rowing is hard work.划船是个累活。Why don > t you try this foldaway rowing machine?不妨试试这个折叠式划船机.All the rowing boats were chained up.所有的划艇都用铁链拴了起来。The local officia...