We have two more lessons before school finishes.
在放学前我们还有两节课。
He started the trip equipped with two months of Mandarin lessons—taken more than 12 years before.
他配备着两个月的普通话课程开始了这次旅行——这是十二年前学的了。
This assignment should be no more than one to two pages in length and should briefly summarize each of the three lessons.
作业长度以不超过一到二页为准，而且应该将三堂课的内容加以摘要。
Two extra and ultra power system in the western and eastern parts of North America are similar to future China national power system, so their experience and lessons are more useful to us.
北美东、西部两个特大型和超大型电力系统从多方面都和中国未来全国电力系统相近，故其经验和教训皆具参考价值。
Two extra and ultra power system in the western and eastern parts of North America are similar to future China national power system, so their experience and lessons are more useful to us.
北美东、西部两个特大型和超大型电力系统从多方面都和中国未来全国电力系统相近，故其经验和教训皆具参考价值。
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