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.
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Kieslowski handles the most insolvable ethical dilemma here.
但这只是女孩看到的片面真实而已.
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"an apparantly insolvable problem"
"public finance...had long presented problems unsolvable or at least unsolved"- C.L.Jones