Imperialistic aggressors always use gunboat diplomacy to invade countries.是什么意思？

Imperialistic aggressors always use gunboat diplomacy to invade countries.

帝国主义侵略者总是向被侵略国施展他们的炮舰外交.

imperialistic

adj. 帝国主义的，帝制的；

例句
Imperialist Competitive Algorithm An Algorithm for Optimization Inspired by Imperialistic Competition has been tested.
帝国主义竞争算法:算法优化的灵感来自帝国主义竞争已经过测试.

aggressors

n. 侵略者，挑衅者，侵略国( aggressor的名词复数 )；

例句
They have been the aggressors in this conflict.
他们一直是这次冲突中的挑衅方。

always

adv. 总是，老是，永远，始终，常常，不断地；

例句
Some cities are always going to be more advantaged.
一些城市总会有一些得天独厚的优势。

use

n. 使用，使用权，功能；

例句
Abstain from sex or use condoms...
禁绝性事或使用安全套。

gunboat

n. 炮舰，炮艇；

例句
The gunboat opened fire on the mainland.
炮艇朝陆地开炮.

diplomacy

n. 外交，外交手腕，交际手段，外交使团，处世之道；

例句
He stormed off in a fury, and it took all Minnelli's powers of diplomacy to get him to return.
他愤然离去，米内利使出了浑身解数才把他劝了回来。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

invade

vt.& vi. 侵入，侵略，进行侵略，蜂拥而入，挤满，（疾病，声音等）袭来，侵袭；vt. 涌入，侵袭，侵犯，干扰；

例句
The press invade people's privacy unjustifiably every day.
每天媒体都会毫无道理地干扰人们的生活。

countries

n. 国家( country的名词复数 )，国土，郊外，地区；

例句
The two countries signed an agreement to jointly launch satellites.
两国曾签订了联合发射人造卫星的协议。