重點(diǎn)講解：
1. the center of
中心；中央；中部；
eg. A large wooden table dominates the centre of the room.
一張大木桌擺在房間正中央rrehEP4Cw,ovkW7yh。
eg. Buses go to and from between the center of the city and the city limits.
公共汽車(chē)往返行駛于市中心和城市邊緣之間#TX;4zp575c。
2. built-up
建筑物密集的；
eg. A speed limit of 30 mph was introduced in built-up areas.
在建筑密集區(qū)域，車(chē)速限制為每小時(shí)30英里YEJ+V5JZG=X%。
eg. The little field was surrounded by the university of maryland and a heavily built-up area.
這個(gè)小小的機(jī)場(chǎng)處在馬里蘭大學(xué)和一片稠密建筑物的包圍之中,HxxZIgymeBVD。
eg. The land to the west is nearly all built-up.
西面的土地幾乎全都已建筑飽和@HS.lcJf(NYN0Tr。