Lithophysa
石核桃; 石泡
🗣️ 情景例句
Hey, don't try to rip me off. I know what this is worth.
别想宰我，我识货。
I often go to school in the morning.
我常常在早上去学校。
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。