Beaverboard
n. 硬建筑纸板
🗣️ 情景例句
She is busy now.
她正忙着呢。
One may sooner fall than rise.
跌倒容易爬起难。
In the pioneering days, however, this was not the case at all.
然而，在登山运动的初期，全然不是这种情况。