The husband's marital infidelity is the main reason for the couple's divorce.

丈夫对婚姻的不忠诚是这对夫妻离婚的主要原因。

Jack always makes excuses for his infidelity.

杰克总是会为自己的不忠行为找借口。

Extreme believers believe that infidelity is original sin.

极端的教徒认为无信仰就是原罪。

She could not forgive his many infidelities.

她不能原谅他的诸多不忠行为

Is infidelity ever forgivable?

配偶的不忠行为究竟可以被原谅吗？

He seemed more amazed at his wife's infidelity than angry.

他对妻子的不贞与其说感到愤怒，不如说感到惊愕。

INFIDELITY is rampant in nature.

不忠是自然界中滥生无控的现象。

Q: Is infidelity a natural phenomenon?

问：“外遇是一种自然的现象吗？”

But the heart most mourns its own infidelity.

心却最哀悼自身的不忠。