causal connection的用法和樣例：
例句
- He says there is a direct causal relationship between a person getting fat and being followed in weight gain by a friend.
他認為當某人的朋友體重增加時，其自身隨之也變胖，這其間存在直接的因果聯繫。 - Today, we understand precisely the conditions under which causal relationships can be inferred from data.
如今，我們準確地理解了從數據中可以推出因果聯繫的條件。
