注意力集中于...

concentration on的音标：concentration on的英式发音音标为：[ˌkɔnsən'treiʃən ɔn]concentration on的美式发音音标为：[ˌkɑnsən'treʃən ɑn]...

The Greek concentration on geometry blurred the vision of later generations.希腊人之专注于几何迷糊了后世好几代人的视界.He made his way along with his eyes fixed in utmost concentration on the ground.他全神贯注地死盯着地面,艰难地探路而行.The effects of triacet...