Danks
煤页岩, 黑色碳质页岩
🗣️ 情景例句
Frankly, neither was I.
坦白的说 ，我当年也不好。
Yes, she lives just across the street.
是的，她就住在街对面。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。