Undemonstrable
a. 无法表明的, 不可论证的
✅ 同义词
🗣️ 情景例句
Of course.
当然。
The wolf may lose his teeth, but never his nature.
江山易改，本性难易。
One of links in the chain that drives the wheels had snapped.
驱动轮子的链条断了一节。