Credulous investors lost thousands after trusting an email promising guaranteed monthly returns.

輕信的投資人相信一封保證每月獲利的電子郵件後，損失了數千元。

The training warns staff not to be credulous when callers claim to be from IT support.

這項訓練提醒員工，來電者自稱是資訊部門時不要輕易相信。

Some credulous travelers paid extra fees to a fake booking agent at the airport.

有些輕信的旅客在機場付了額外費用給假冒的訂位人員。