突出的问题，这个突出怎么翻译，不要再用typical

楼上可以
也可以用 the most important problem is

突出
tu chu
1.protruding; projecting; sticking out
2.to stand out; to stick out; to jut out; to project; to protrude
3.striking; outstanding; prominent; notable
4.to stress; to highlight; to emphasize; to give prominence to; to accentuate
5.to break through

most pressing problem,
very serious problem