Kda
[医]千道尔顿
🗣️ 情景例句
January the thirtieth and you're invited.
1月30日，希望你能出席。
Where will they be going for their holiday?
他们休假时要上哪去？
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。