A new technology applied to gold concentrates containing arsenic and sulphur fixing of roasting - cyanidation was studied.研究了高砷、高硫金精矿固化焙烧 — 氰化新工艺.I bored a hole so that the fixing bolt would pass through.我钻了个孔，好让固定插销穿过去。...
Revenge leads to a self-perpetuating cycle of violence.怨怨相报会导致永不休止的暴力。It'set out to eradicate heresy, and ended by perpetuating it.它的目的只是要根除异端邪说, 结果却巩固了异端邪说.She plodded in her perpetuating circle of stove, worktable...