Indefectible
a. 不败的, 无瑕的
✅ 同义词
🗣️ 情景例句
How about green? It's size ten.
绿的怎么样， 它是十号的。
I don't seem to have any luck today.
我今天运气不好。
Could I have this sample free of charge?
这样品可以免费送我吗？