Mature adult Portuguese millipedes are usually 20-45 mm long and slate-grey to black in colour with between 40 and 50 body segments.是什么意思_Mature adult Portuguese millipedes are usually 20-45 mm long and slate-grey to black in colour with between 40 and 50 body segments.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句