骨干

The older employees are the backbone of the industry.

富有经验的雇业的骨干。

It’s only really the hard core that bother(s) to go to meetings regularly.

只有那些坚定的骨干子才会不怕麻烦定期去开会。

In 1998, some cadreman are admitted as shareholder.

1998年，公司骨干吸收为股东。