教师的参赛宣言:What the differences between 'fort' and 'fortress'?

fortress
要塞：构筑了堡垒的地方，尤指大的、永久性的军事驻地，常包括一个城镇

fort
1.堡垒：一个设防的地方或驻扎有军队的地方
2.要塞：一永久军事驻地

"Fortress" can be used alone.
For example:
We must take over this fortress before the suset.

"Fort" has to be used in front of a name of a place.
For example:
Fort Worth is a very important place for our defense line.

fortress
要塞：构筑了堡垒的地方，尤指大的、永久性的军事驻地，常包括一个城镇

fort
1.堡垒：一个设防的地方或驻扎有军队的地方
2.要塞：一永久军事驻地

"Fortress" can be used alone.
For example:
We must take over this fortress before the suset.

"Fort" has to be used in front of a name of a place.
For example:
Fort Worth is a very important place for our defense line.

Fortress:
A fortified place, especially a large, permanent military stronghold that often includes a town.
要塞：构筑了堡垒的地方，尤指大的、永久性的军事驻地，常包括一个城镇

Fort:
A fortified place or position stationed with troops.
堡垒：一个设防的地方或驻扎有军队的地方
A permanent army post.
要塞：一永久军事驻地
还可以指边界上的贸易站

for·tress (fôrtrs)
n.
A fortified place, especially a large, permanent military stronghold that often includes a town.

fort (fôrt, frt)
n.
1. A fortified place or position stationed with troops.
2. A permanent army post.

fortress比fort要大，post可以只是一个个设防的地方或驻扎有军队的地方或者是一永久军事驻地，而fortress是构筑了堡垒的地方，尤指大的、永久性的军事驻地，常包括一个城镇

fort [简明英汉词典]
[fC:t]
n.堡垒, 边界上的贸易站

fortress [简明英汉词典]
[5fC:tris]
n.堡垒, 要塞