1. Besides working to improve building structures, people in areas where earthquakes are common need to prepare for the possibility of a great earthquake.
    除了设法改善建筑结构外，地震频发区的人们也需要为可能发生的大地震做好防备工作。

2. Therefore, building structures that can withstand the power of earthquakes is a major concern.
    所以，建造具有抗震能力的楼房结构成为关注的重点。

3. However, even if prediction becomes possible, people who live in areas where earthquakes are a common occurrence will still have to do their best to prevent disasters by building structures that are resistant to ground movement and by being personall
    然而，即使可以预测，居住在地震频发区的人们还是应尽力预防灾难，办法是建造能够抵抗地表运动的房屋，同时做好个人准备。

4. Since then, every society has had to figure out what to do with its waste — something that is usually unhealthy, smelly, and ugly — throwing garbage in the streets, piling it up just outside of town, building it into structures or simply setting it o
    此后，每个社会都要想办法解决垃圾问题——处理那些通常是有害的、难闻的、难看的东西——要么把垃圾扔到街上，要么堆在城外，要么掺在建筑结构里，要么干脆付之一炬。

5. Many new structures are built with a new type of steel joint, an I-joint, which appears to be the most durable type of joint.
    许多新式结构都采用了一种新型的钢接合方法，即I形接合，它看起来是种最耐用的接合。

6. In the centre of the hall, there were a number of tall structures which contianed coloured lights .
    在大厅的中央，有一些高大的有彩灯的结构物。

7. In the centre of the hall, there were a number of tall structures which contained coloured lights.
    展厅中央是装有彩色灯泡的许多高高的构件，