Leaking the merger plans to a competitor was seen as treason by the entire board.

把合併計畫洩漏給競爭對手，被整個董事會視為背叛行為。

The manager called it treason when his assistant forwarded confidential emails to a rival firm.

經理的助理把機密郵件轉寄給對手公司，經理稱之為背叛。

Customers felt the sudden price hike was treason after years of loyal business.

多年忠實往來之後突然漲價，讓顧客覺得遭到背叛。