1.
Turn the tables upon sb.
（与某人）互换座次
2.
This clock strikes the hours.
这座钟每小时报时一次。
3.
This ticket admits you to one lecture.
凭此券可听一次讲座。
4.
The lecture was as dull as ditchwater.
那次讲座非常呆板乏味。
5.
Lectures on Chinese Culture are offered two times each week in the afternoon, including: Chinese calligraphy, martial art, Chinese folk-custom and culture, etc.
每周下午安排两次文化讲座，例如，书法讲座、术讲座、俗文化讲座等。
6.
During the battle the town changed hands many times.
在这次战役中，这座小镇曾易手多次。
7.
The museum organized about 200 excursions and 500 lectures in 1981.
1981 年该博物馆组织了 200 次巡回展览和 500 次讲座。
8.
Mohammed called fee hill to come to him, again, and again;
谟罕默德一次又一次地叫那座山到他面前来；
9.
Despite the attacks we held on to the bridge for three days.
我们不顾一次次的进攻，已坚守这座桥3天了。
10.
The16- hundred-meter-high volcano last erupted in1987.
这座1600米高的火山上次喷发是在1987年。
11.
Children in the class change over once a week
班上的孩子们每周变换一次座位。
12.
Many a time as a Boy have I climBed that hill.
我小时候曾多次爬过那座山。
13.
The professor covered new ground in every lecture.
教授在每次讲座中都涉及新的领域
14.
Every concert of hers has been a sellout.
她的每次演奏会都是满座。
15.
Two typhoons in a month pounded the city.
在一个月中，台风两次袭击这座城市。
16.
Your space is confirmed on China East Flight 001 for tomorrow.
你的座机安排在明天东航001 班次。
17.
I have requested a space on your flight 831. Is it confirmed?
我已经要求831 班次的座位，确定了吗?
18.
We have no seats available for that flight.
我们已经没有那个班次的座位了。