Abdominocardiac sign
[医] 腹心征(起立性心脏反射)
🧩 词语组成解析
🗣️ 情景例句
There's something missing. You've got a good eye, Richard.
少了些东西。你有艺术眼光， Richard。
First come, first served.
捷足先登。
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。