Bnf
[计] 巴科斯范式; 巴科斯-诺尔范式
🗣️ 情景例句
Thanks, Mrs. Martinelli.
谢谢 ，Martinelli太太。
Have you got anything larger?
有大一点的吗？
The real dividing line between continents and oceans occurs at the foot of a steeper slope.
大陆和海洋的真正分界线是在陡坡脚大陆架慢坡