Noncausal
原因不明的, 无关联的
🗣️ 情景例句
Yes, he makes house calls, but the doctor has an opening only after 2:00 p.m.
好，他愿出诊，但他在下午2点后才有空。
If the hen does not prate,she will not lay.
不叨叨的母鸡不下蛋。
Mr. Smith knew Jack didn't look at the others because he was nervous.
史密斯先生知道杰克不敢看别人是因为紧张。