Deadburn
锻烧
🗣️ 情景例句
But you had to be good at math.
但是你数学一定很好。
In the world, who knows not to swim goes to the bottom.
处世似游泳，不会即下沉。
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。