This is the 2582nd most frequent Chinese word.
脑
Brain.
In this sentence, '脑' is used to refer to the brain as an organ associated with intelligence and thought.
他的大脑非常聪明。
His brain is very smart.
Here, '脑' is part of the term '脑力激荡,' referring to intellectual and imaginative effort.
昨天的活动真是脑力激荡。
Yesterday's activity was truly a brainstorming session.
In this sentence, '脑' refers to brain health in the context of nutrition and well-being.