Substratal
a. 基础的,基本的,根本的
🗣️ 情景例句
The little boy held his mother's hand firmly when crossing the street.
那小男孩过马路时紧抓着母亲的手。
The fire is the test of gold;adversity of strong man.
烈火试真金，困苦炼壮士。
four girls and a boy, an event which radically changed their lives.
4女1男。这事使他们的生活发生了根本的变化。