Fastnesses
n. 牢固( fastness的复数形式 ); 固定; 要塞; 堡垒
🗣️ 情景例句
Thank you very much, But I guess I'd better do it myself.
谢谢你，但我想我最好还是自己做。
That street is only two miles long.
那条街仅仅是2英里长的。
but on the second, I applied myself assiduously to the task.
不过，新年第二天，我全力以赴地照着去做了。