1.*structure ['str?kt??]
n. 结构；建筑物
vt. 构成；建造
the structure of the brain ?大脑的结构
reinforced?concrete?structure ?钢筋混凝土结构

2.infrastructure ['?nfr?str?kt??]
n. 基础设施；公共建设
We should continue to strengthen infrastructure.
我们应该继续加强基础设施建设。

3.*destroy [d?'str??]
vt. 破坏，毁坏
In 1906 an earthquake destroyed much of San Francisco.
1906年的一场地震摧毁了旧金山的大部分地区。

4.*destructive [d?'str?kt?v]
adj. 破坏的；毁灭性的
the awesome destructive power of nuclear weapons
核武器可怕的毁灭性力量

5.obstruct [?b'str?kt]
v. 妨碍，阻塞
After the earthquake many roads were obstructed by collapsed buildings.
地震后，坍塌的建筑阻塞了许多道路。
obstruction n. 障碍
psychological obstruction ?心理障碍

6.instruct [?n'str?kt]
vt. 指导，命令
The police were instructed to patrol the building and surrounding area.
警察被指示在这栋建筑及周边区域巡逻。
We have been instructed that a decision will not be made before the end of the week.
我们已经被通知周末前不会作出决定。
instruction n. 指示，说明
Follow the instructions on the packet carefully.
仔细按照包装盒上的说明操作。
instructor n. 指导员，教师
instructive adj. 有启发的，有教育意义的

7.coach [k??t?]
n. 教练；长途大巴
v. 训练，辅导
Her coach encouraged her throughout the marathon race to keep on running.
她的教练在马拉松赛全程鼓励她继续不断奔跑。

8.tutor ?['tju?t?]
v. 辅导
n. 导师，助教
hen the students are making their choices, their tutor may well guide them.
学生在选课时，导师可对他们给予指导。
tuition n. 学费；教学，讲授
He’s already paid a year’s tuition.
他早已经交了一年的学费。

9.*construct [k?n'str?kt]
vt. 建造，构造
His company recently constructed an office building in downtown Denver.
他的公司最近在丹佛市中心建造了一座办公楼。
construction n. 建造；建筑物
under construction ?正在施工中