据报道，香茶一杯可延缓脑细胞衰老，使人耄耋之年仍保持灵活头脑。

A cup of tea slows down brain cell degeneration and keeps the mind sharp into old age, a published report said.

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她以头脑灵活见称。

She was known for the quickness of her wit.

《牛津词典》

玩智力游戏拼图可以让你的头脑变得更加灵活，头脑敏锐能更好的帮助记忆信息。

Solving puzzles can help your brain to stay flexible, and a sharp mind is better at retaining information.

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