視頻對白：
My country permitted your operatives to raid Ali's apartment on condition that I would be involved in this investigation.
我們國家允許你們搜查阿里的公寓，其前提條件就是允許我參與調查。

I understand your frustration, Mr. Auda.
我明白你的沮喪，奧達先生。

今天我們要學習的詞組為：on condition that

意為“ 如果；在...條件下”。

例句：
1. He can use the bicycle on condition (that) he returns it tomorrow.
自行車可以借給他，條件是明天必須歸還。

2. He has been granted his freedom on condition that he leaves the country.
他已獲準恢復自由，條件是他離開這個國家。

3.You can use the bicycle on condition that you return it tomorrow.
只要你明天歸還，自行車你可以拿去用。