Precedentless
没有前例的
🗣️ 情景例句
Yes, it is right.
对，是正确的。
In the world, who knows not to swim goes to the bottom.
处世似游泳，不会即下沉。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。