每个塑料袋都有一个量身定做的小孔。
It contains a camera with which he films continuously through a tiny hole in the bag.里面的照相机通过包上的一个小洞不断地拍摄。
Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.格雷格·福思一到站里,立刻就把他的小手伸进了这个小孔并把油脂涂抹在已经失效轴承的四周。