adj. 最初的;开始的;首字母的;
n. 首字母;[语音学]声母;特大的大写字母;
vt. 用姓名的首字母签名;
in进入+it行走+ial形容词后缀→走进→开始的,最初的
🗣️ 情景例句
I mean,
我的意思是,
I had thought he knew the time of the meeting.
我原以为他知道开会时间。
is as the proportion of the total vocabulary of his mother tongue against those words of his own baby talk that are taken up into the vernacular of his family.