重点讲解：
1. the centre of
中心；中央；中部；
eg. A large wooden table dominates the centre of the room.
一张大木桌摆在房间正中央。
eg. The new library was built in the centre of the campus.
新图书馆建在校园的中心。
eg. Rent is high in the centre of the town.
市中心的租金贵。
2. through the day
一整天；
eg. The feelings pent up through the day would have vent.
一天闷住了的感情必得要发泄一下了。
eg. All through the day he sat there and got lost in deep thought.
一整天，他都坐在那里，陷于深深的思考中。
eg. A light meal won't sustain us through the day.
一顿小食维持不了我们一天的精力。