Eolithic
a. 原始石器时代的
🗣️ 情景例句
When you learn a new verb, learn its various forms.
学到了新动词时，记住它的各种形式。
At least everyone's all right.
至少大家都没事。
But I must ask my parents first. What time shall I come?
不过我必须先问问父母。我几点钟来呢？