飞机晚点了，侦探们整个上午都在机场等待。
The plane was late and detectives were waiting at the airport all morning.
他们正在等待一批来自南非的贵重钻石包裹。
They were expecting a valuable parcel of diamonds from South Africa.
几个小时前，有人告诉警方，小偷会试图偷走这些钻石。
A few hours earlier, someone had told the police that thieves would try to steal the diamonds.
飞机到达时，一些侦探正在主楼里面等候，而其他侦探则正在机场跑道上等候。
When the plane arrived, some of the detectives were waiting inside the main building while others were waiting on the airfield.
两个男人把包裹从飞机上拿下来，并把它搬进了海关大楼。
Two men took the parcel off the plane and carried it into the Customs House.
当两名侦探正在门口守卫时，另外两名侦探打开了包裹。
While two detectives were keeping guard at the door, two others opened the parcel.
令他们吃惊的是，这个珍贵的包裹里面装满了石头和沙子！
To their surprise, the precious parcel was full of stones and sand!