concentration solvent jump

例句：

1. 1. The teacher emphasized the importance of concentration during the test.
   老师在考试时强调了集中注意力的重要性。
2. 2. The student needs to concentrate on his studies to achieve good results.
   学生需要集中精力学习以取得好成绩。
3. 3.The artist concentrated on the details of the painting to create a masterpiece.
   艺术家专注于绘画的细节，创作出一件杰作。