tā men / hé zuò / duō nián / hěn duō / shì / dōu / bù / yòng / míng shuō / bǐ cǐ / xīn lǐng shén huì

他们合作多年，很多事都不用明说，彼此心领神会。

Having worked together for years, they understand each other intuitively without saying anything.