Unobservable
a. 难以察觉的；注意不到的；不可见的
✅ 同义词
🗣️ 情景例句
I hope they aren't lost.
但愿没丢才好。
Why did you hate it so much?
为什么你那么恨它？
Everything's very quiet.I'm sure there's no one at home.
毫无动静，肯定家里没有人。