thorniest
adj. 多刺的( thorny的最高级 ); 有刺的; 棘手的; 多障碍的
A thorny plant or tree is covered with thorns.
...thorny hawthorn trees.
长满刺的山楂树
If you describe a problem as thorny, you mean that it is very complicated and difficult to solve, and that people are often unwilling to discuss it.
...the thorny issue of immigration policy...
移民政策这个棘手问题
It is essential that we tackle this thorny problem.
我们很有必要处理这个棘手问题。