Dielectric mirror
[电] 介质镜
🧩 词语组成解析
n. 电介质, 绝缘体\\na. 非传导性的
🗣️ 情景例句
It's a far cry from what I expected.
这离我想要的差远了。
The history paper was really easy, so was the biology one.
历史试题确实容易，生物试题也很容易。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。