🧩 词语组成解析
n. 沃尔特（男子名）
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
What events are happening on campus?
校园里有什么事件发生？
He failed the examination but he didn't seem to care.
他考试不及格却似乎并不在乎。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。