耿耿

We all have a loyalty to the company.

我们都对公司忠心耿耿。

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。

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

而他对温纳•海森直忠心耿耿，后曾被怀疑对纳抱有同情。