副局长的英文：
deputy director general

He is the deputy mayor of the city.
他是本市的副市长。

By convention the deputy leader is always a woman.
按照惯例这一领导人的副职总是由女子担任.

The Deputy Fuehrer found himself in eclipse.
这位副元首觉得自己已黯然失色。

“Director General” means the Director General of the Organization
“总干事”指本组织的总干事

What is the titude director indicator?
什么是姿态指示器？

This is the autopilot flight director.
这是自动驾驶飞行指引仪。

generalized ensemble
广义系综

general average
共同海损

The steam can generate electricity by turning an electric generator.
蒸汽可以转动发电机发电。