常見(jiàn)例句雙語(yǔ)例句The upper member of the Lujiaping Formation is mainly dark slate, light gray-green (after weathering) sericitized slate, and silt slate.上段以黑灰色（風(fēng)化後爲(wèi)淺灰色）含矽炭板巖和泥灰質(zhì)含炭板巖爲(wèi)主。 返回 light slate gray