Coronagraph
n. 日冕仪
🗣️ 情景例句
No, thank you.
不用 谢谢你。
To read only the good news
只看好消息
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。