concentration on造句
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 triacetoneamine
concentration on hydrogenation and amination were discussed.
论述了三丙酮胺纯度对加氢和还原胺化反应的影响.