Rigidizing
vt. 硬化；加固\\nvi. 僵硬；刻板不变（等于rigidify）
🗣️ 情景例句
He felt that his life was no longer worth living.
他觉得他的生命已经没有再活下去的价值了。
I've lived here for five years.
我住在这里有5年的时间了。
but belongs to the air, travelling it may be six thousand miles to and from its northern nesting home, feeding its flown young as it flies,
在空中十分自如，可以飞行6，000英里，可以飞往北方做窝的老家，再从老家飞回；一边飞一边喂养会飞的雏燕，甚至在顶风时也能在气流中滑翔，似乎气流在帮它前进。