1、He is a conscienceless criminal who would stop at nothing to achieve his goals.
他是一个无良心的罪犯，为了达到自己的目的不择手段。
2、The company's decision to prioritize profit over ethics showed a conscienceless disregard for the wellbeing of its employees.
公司为了利润而将道德置于其次的决定，显示出对员工福祉的无良心的漠视。