1.
Boil the liquid until the onionskins lose their color, about 45 minutes,.
煮沸溶液直到洋葱皮褪色，大约要45分钟。
2.
The simpleness and extensiveness of the class;
课堂的简约与延伸——“向课堂45分钟要质量”之讨论
3.
The two men met privately for about 45 minutes before joining advisers.
在与顾问交流之前两人私下会面了大约45分钟。
4.
It takes about fifty minutes.
乘地铁大约需要50分钟。
5.
Around 20 minutes, depending on the traffic.
大约20分钟，要看交通状况而定。
6.
It would strike twelve in twenty minutes' time.
大约20分钟之后就要打12点了。
7.
D: It will be about twenty minutes. Won't you sit down?
乙：请坐，大约需要二十分钟．
8.
I 'd like a taxi in about ten minutes .
大约十分钟内我要辆出租车。
9.
a record designed to be played at 45 revolutions per minute
每分钟45转的唱片.
10.
Steam was injected into the pan for 45 minutes.
盘中喷入蒸汽45分钟。
11.
About 40 minutes to the downtown and less than 30 minutes to all the venues by bus.
乘公共汽车到市区大约需要40分钟，到各场馆不到30分钟。
12.
Stretch once the muscles are warmed up for about 5 minutes.
运动开来了，要持续拉伸肌肉大约5分钟。
13.
No, about 10 minutes' drive.
不远，大约10分钟路程。
14.
My watch is about three minutes slow .
我的表大约慢3分钟。
15.
The earthquake continued for about two minutes.
地震持续了大约两分钟。
16.
Duration of the game is 90 minutes,each half 45 minutes.
比赛时间是90分钟，每半场各45分钟。
17.
some of which are so high speed that you can go from the lobby to the 80th floor in around 45 seconds.
其中有些电梯的速度非常快，从大厅到80层只需要45秒钟左右。
18.
Could I make it quarter to one?
我能约在12点45分吗? ?