Panapak
波纹填料
🗣️ 情景例句
The work is coming along quite well.
工作进展得相当顺利。
If there's anything else I can do,please let me know.
如果有其他东西我能做的，请让我知道。
No human endeavor or thought would be unchanged by it.
任何人类的努力和想法都会发生变化。”