Cbot
[经] 芝加哥期货交易委员会
🗣️ 情景例句
Ok. Call my instructor, Jack Davis, right now.
好， 给我的老师Jack Davis打个电话， 现在就打。
You walk so fast that I can't keep up with you.
你走得太快，我跟不上你。
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。