The east tower of the Acropolis walls, once used as a prison

摄影技巧评论：  

east : [i:st] adj. 东方的adv. 向东方n. 东,东方
例句与用法:
1. I was born in the east, but now live in Los Angeles.
　 我出生于东部，但现在住在洛杉矶。
2. He traveled east.
　 他向东旅行。
3. Take the east road; it's the shortest way.
　 走东边这条路吧，这是最近的路。
4. The sun rises in the east and sets in the west.
　 太阳从东方升起，在西方落下。

tower : ['tauə] n. 塔,高楼,堡垒v. 高耸,超越
例句与用法:
1. The TV tower is by far the largest construction of our country.
　 电视塔明显地是我国最大的建筑。
2. The tower was blown to atoms by the force of the explosion.
　 爆炸的力量把塔炸得粉碎。
3. There is a sonorous bell in the tower.
　 塔里有一口洪亮的钟。
4. The tower stood amidst the ruins.
　 塔矗立在废墟中。
词形变化:动词过去式:towered 过去分词:towered 现在分词:towering 第三人称单数:towers

wall : [wɔ:l] n. 墙壁,垣
例句与用法:
1. I'll go up the wall if it doesn't stop soon.
　 要是不赶快停下来就要把我气死了。
2. The mountain rose up in a steep wall of rock.
　 这座山高而陡，形成一道岩石屏障。
3. The castle walls are very thick.
　 城堡的墙很厚。
词形变化:形容词:wallless 动词过去式:walled 过去分词:walled 现在分词:walling 第三人称单数:walls

once : [wʌns] adv. 一次,曾经conj. 一旦n. 一次
例句与用法:
1. Be pleasant to each other just this once.
　 彼此要和睦些－－就只为这一次吧。
2. The film is at once humorous and moving.
　 这部电影既幽默又动人。
3. Amanda is home from college once again.
　 阿曼达又从学校回到家中。
4. All at once she lost her temper.
　 她突然发起脾气来。

used : [ju:st] adj. 使用过的,二手的,习惯的v. 用,以前曾经vbl. 用,习惯
例句与用法:
1. Asphalt is used for making road surfaces.
　 沥青常用于铺路。
2. The winter was much colder than they were used to and many people died.
　 那年冬天比他们所习惯的更为寒冷，因而很多人死亡。
3. The rope was not strong enough, so we used wire.
　 这根绳子不够结实，所以我们用金属线。
4. He is used to eating out all the time.
　 他已经习惯在外面吃饭了。

prison : ['prizn] n. 监狱
例句与用法:
1. Strikes by prison officers underline the need for reform in our gaols.
　 监狱工作人员罢工一事，突出地表明我们的监狱制度需要改革。
2. Those prodigals were put into prison.
　 那些挥霍者被关进监狱。
3. The thief was put into prison for one year.
　 小偷被监禁一年。
4. Many people believe that prison isn't a cure for crime.
　 许多人都相信监禁解决不了犯罪问题。
词形变化:动词过去式:prisoned 过去分词:prisoned 现在分词:prisoning 第三人称单数:prisons