Stragulum
n. 鸟背及收缩的两翼
🗣️ 情景例句
We must.
我们是该开始了。
I often listen to the radio at night.
我常常在晚上听收音机。
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。