Now, while the rest of the group walked up a gully scanning for fossils, Berhane Asfaw and I headed down onto the flat plain to the spot where the skull had been found.
After a cup of tea and a chat he went on his way while I wandered across the forecourt scanning for a possible spot to start hitching.
在喝茶聊天后他继续赶他的路了，而我在前院来回逛寻找搭车的地方。
3
An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle.