Escalader
n. 攀登；活动人行道 (escalade的变形)
🗣️ 情景例句
How many brothers and sistes do you have?
你有多少个兄弟姐妹？
I am cought between the devil and the deep blue sea.
进退维谷。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。