他们在远征期间发展出的亲密关系确实非同寻常。

The ___closeness that developed between them during the expedition was truly remarkable.

他有时会因妻子和她挚友之间显而易见的亲密而感到被排斥。

He sometimes felt excluded by the obvious ___closeness between his wife and her best friend.

他们共同的童年经历创造了一种持续终生的持久亲密关系。

Their shared experiences in childhood created a lasting ___closeness that endured throughout their lives.