gōng​jiān

storm fortifications

攻坚 (攻堅) gōng​jiān
storm fortifications verb
to assault a fortified position

The troops are conducting an assault exercise.

tackle difficulties verb
to concentrate one's efforts on a particularly difficult part of one's mission

We must tackle the challenges of core technologies.

Frequency

Movie subtitles
0.210 per million appears in 0% of films
Written text
3.76 per million

Sources

Definitions
CC-CEDICT