Obstetrical toad
产婆蟾
🧩 词语组成解析
a. 产科的, 助产的
toad
[tod]
n. 蟾蜍，癞蛤蟆;讨厌的家伙;
🗣️ 情景例句
Thanks a lot. Bye.
多谢，再见。
What choice do I have?
我有什么选择吗？
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。