1. 里面/否定：25 ject 射/喷射 reject eject inject deject | 26 im/in 里面/否定 intractable | 28 less 没有 careless valueless priceless worthless

2. 难处理的：filament capacitance 灯丝电容 | intractable 难处理的 | wall 墙壁, 围墙, 似墙之物 墙壁的 围以墙

3. 难控制的：intracranial infection 颅内感染症 | intractable 难控制的 | intradermoreaction 皮内反应

4. 不治的：intracranial pressure 颅内压 | intractable 不治的 | intractable disease 难治性病

1. 难驾驭的;难对付的
Intractable people are very difficult to control or influence.

e.g. What may be done to reduce the influence of intractable opponents?
能做些什么来减少那些难缠的反对者的影响呢？

2. (问题或情况)棘手的,难处理的
Intractable problems or situations are very difficult to deal with.

e.g. The economy still faces intractable problems.
经济仍然面临着一些棘手的问题。

adj

1. not tractable
difficult to manage or mold

e.g. an intractable disposition
intractable pain
the most intractable issue of our era
intractable metal