Rigidities
n. 僵化之物（rigidity的复数）
🗣️ 情景例句
If anyone has any objections, now is the time to voice them.
如果有人反对，现在就可以说出来。
The classes are interesting, and the teachers are good.
那些课很有趣，老师又好。
and then generalized the results of his many experiments into the famous law of free fall.
然后将多次实验结果概括成著名的自由落体定律的人。