Indefectible
a. 不败的, 无瑕的
✅ 同义词
🗣️ 情景例句
What can I do to cheer her up?
我要怎么做才可以让她振作起来？
A constant guest is never welcome.
久住非佳宾，常来不欢迎。
It would help if you could try to speak a little slower.
请你尽量放慢说话速度。