Abstruser
(abstruse 的比较级) a. 难解的, 深奥的
🗣️ 情景例句
Just fill out this form for me.
请把这份表填好。
Let's begin now.
现在让我们开始。
and it is only in the seas and rivers, and sometimes lakes, where mud and sit have been continuously deposited,
所以只有在泥沙不停淤积的海洋和江河里，有时在湖泊里，