In the infirmary , michael waits for sara to step away , then moves to the drainage grate on the floor .
在医务室,michael趁着sara暂时走开的空当,走到了房间里排水管栅栏处。
Medical student tom geliot trials a new ' sick bay ' , which uses space-age technology similar to that used in science fiction series star trek to detect illness at leicester royal infirmary