Obdurability
n. 坚固
🗣️ 情景例句
Things are looking up.
情况在好转。
First, I coundn't keep up with all the paperwork at the office.
首先我应付不了办公室的文书工作。
I prefer blue, but this blue is too dark!
我较喜欢蓝色，但这种蓝太深了！