Protasis
n. 条件从句, 序诗
🗣️ 情景例句
He bases his arguments on facts.
他的理论以事实为根据。
Desperate diseases must have desperate cures.
毒病要用毒药医。
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。