insolvable
adj. 不能溶解的,不能解决的
1. not easily solved;
Pigment is insolvable. So choose the ink which is easily dispersable.
颜料是不能溶解的, 所以请选择易分散的墨水.
Kieslowski handles the most insolvable ethical dilemma here.
但这只是女孩看到的片面真实而已.
abstruse