名詞 brain power:

1. mental ability
   同義詞：brain, brainpower, learning ability, mental capacity, mentality, wit

1. The extent of your vocabulary indicates the degree of your intelligence. Your brain power will increase as you learn to know more words.
   你對詞匯的把握程度反映了你的智力水平，當你通過學習掌握了更多的詞匯析時候，償大腦的思維能力也會嗇。