It further proved that triphosgene replacing the deadly phosgene and diphosgene is feasible.
进一步证明了三光气代替剧毒的光气和双光气可
。
It further proved that triphosgene replacing the deadly phosgene and diphosgene is feasible.
进一步证明了三光气代替剧毒的光气和双光气可。
明：以
例句、词
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