Impregnableness
n. impregnable的变形
✅ 同义词
🗣️ 情景例句
Good night, Alexandra.
晚安，Alexandra。
I'll need an economy ticket with an open return.
我要一张经济舱，回来时间不定的来回票。
Thanks very much. Bye.
太谢谢你了。再见。