Echolucent
[医]无回音区
🗣️ 情景例句
and I think he believes
而我认为他相信
Courtesy costs nothing.
谦虚恭敬，不用分文。
I could see a snake, a bear, a wolf, but no people.
我还看见一条蛇、一只熊、一只狼，但没有看见人。