攻坚的英文：
assault fortified positions

参考例句：

The seven-year program to help 80 million people out of poverty has been in the main fulfilled.
"八七"扶贫攻坚计划基本完成。

In attacking and taking these cities, our army learned a complete set of tactics for taking strong fortifications
在攻克上述城市中，人民解放军学会了一套攻坚战术。

assault是什么意思：
n. 攻击，袭击
v. 攻击，袭击

The enemy assaulted us at darkness.
天黑时敌人向我们进攻。

Assault craft would be lowered.
突击登陆艇就要被放下水去。

The tables were taken by assault.
饭桌给一下子占据了。

fortified是什么意思：
adj. 加强的

They decided to fortify the coastal areas.
他们决定加强海岸地区的防卫。

To fortify with a wall,an embankment,or a rampart.
用堡垒防护用墙、土堤或壁垒防御

He felt that to fortify his intelligence was to fortify his hate.
他感到提高他的知识，也就是加强他的仇恨。

positions是什么意思：
n. 位置，方位；姿势；职位，工作；状态；态度
v. 安置；把…放在适当位置；给…定位

Moon is a positive.
月球是个实在的事物。

It is the positive of the battery.
这是电池的阳极

accessible position
可到达的位置