Famennian
法门阶
🗣️ 情景例句
They shared the first harvest with the Indians
他们与印第安人分享首次收成
From a little spark may burst a mighty flame.
星星之火可以燎原。
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。