Causal agent
un. 致病因子；致病病原\\n
🧩 词语组成解析
causal
['kɔ:zəl]
adj. 具有因果关系的，构成原因的;
🗣️ 情景例句
just half a mile down the road from the Watermill.
从Watermill往下走只要半英哩。
She asked me which one I'd like, and I said I didn't mind.
她问我要哪一个，我说哪一个都没有关系。[动词时态一致，这是中国人学习英语最头痛的一个问题。]
The children were at school, my husband was at work and the house was quiet.
孩子们在上学，我丈夫在上班，家里清静得很。