activity of subcortical system

例句：

1. 1.The team's activity level has significantly improved since the new coach took over.
   自从新教练上任以来，团队的活动水平有了很大的提高。
2. 2. The scientist's research activity is highly respected in his field.
   这位科学家的科研活动在他自己的专业领域里受到高度尊重。
3. 3. The children were engaged in various activities during the break.
   孩子们在休息时间参与各种活动。