5, The city was even equipped with a drainage system，for a great many clay pipes were found beneath the narrow streets．

* be equipped with 配备，装备

*for 引导原因状语从句

*beneath the narrow streets

对比：beneath\under\below

(1) prep. beneath = under 正下方

e.g.新概念英语网上学习

He is standing under / beneath the umbrella.他站在雨伞下面。

(2) under 还有"在进行中" 的意思

e.g.

under control 控制之中；

under discussion 讨论之中；

under repairs 修理之中

(3) below:在下方，强调斜下方

e.g.

She is sitting below the window.

6, The temple which the archaeologists explored was used as a place of worship from the fifteenth century B.C. until Roman times.

*be used as / be used to be 把...用作为

e.g.

The box was used as a desk in the small village school.

The wooden box was used as a bookcase.

The wooden box is used to contain books.

7, Each of these represented a goddess and had, at one time, been painted.

* represent vt. 代表

e.g.

I represent all the classmates.