忠心耿耿

He has served the farm faithfully for 20 years.

他为这个农场忠心耿耿地操劳了20年。

We all have a loyalty to the company.

我公司忠心耿耿。

Dirac also remained true to Werner Heisenberg, a German physicist suspected of being a Nazi sympathiser.

而他温纳•海森堡也一直忠心耿耿，后曾被怀疑纳粹分子抱有同情。