Delta rhythm
[医] δ节律(脑电波)
🧩 词语组成解析
delta
['deltə]
n. 希腊语字母表第四字母δ;（河流的）三角洲;[数]变量增量;
🗣️ 情景例句
You are twenty-one, a grown-up young lady old enough to make up your own mind.
你已经21岁了，已经到了可以自己做主的年龄了。
I haven't seen you for age. You haven't been sick, have you?
好久不见。你不是病了吧？
One third of this area is covered with forest.
这一地区三分之一的地方都是森林。