Preatomic
a. 原子时代前的, 原子能利用以前的
🗣️ 情景例句
5, 6, 7, go right, 1, 2, back, 5 6 7
向右 1 2 后退
You are a very considerate person.
你是一个深思熟虑的人。
Moreover, as soon as new knowledge is acquired, it is now turned to practical account.
而且，新知识一旦获得，便得到实际应用。