Headway
01
进展, 前进
the forward movement or advancement made despite difficulties or obstacles
例子
We could n’t make much headway because of the technical issues.
由于技术问题，我们没能取得多大进展。
The new policy helped the company gain headway in the market.
新政策帮助公司在市场上取得了进展。
02
净空, 自由高度
vertical space available to allow easy passage under something
