Discrete variable
[计] 离散变量
🧩 词语组成解析
🗣️ 情景例句
Maybe he can do the same thing for your grandfather.
也许他能为你爷爷做同样的事。
In college I majored in science, What was your major?
大学时我主修自然科学，你主修什么呢？
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。