Aetiologist
n. 病因学家；病原学家；原因论学家 (aetiology的变形)
🗣️ 情景例句
if you're not going to be happy about it.
假如你会因为这种事而不快乐的话。
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
Here you are.
给你。