Fastnesses
n. 牢固( fastness的复数形式 ); 固定; 要塞; 堡垒
🗣️ 情景例句
OK. But don't delay too long. Or that trip will be all booked.
好，但不要拖太久，否则会订满的。
They imagine, what he is doing.
她们在猜他所做的事。
Is it a black one?
是快黑的吗？