Danks
煤页岩, 黑色碳质页岩
🗣️ 情景例句
I know the owner very well.
我和老板很熟。
A little of every thing is nothing in the main.
每事浅尝辄止，事事都告无成。
In the evenings he studied hard for his exams, and most mornings he took tourists around Oxford.
他晚间努力学习，以应付考试，而大多数早上，他则带领游客在牛津大学参观。