They had to be back at their colleges this week to enrol and work out class schedules for the new term.
他们这周必须回到学院注册,并制定出新学期的课程表。
In the future, we might be able to fly to work or print out new shoes.
在未来,我们也许可以乘飞机去上班,或者打印出新鞋子。
The recent work has been made possible by new techniques of molecular biology that allow viral DNA to be detected at low concentrations in the environment.
分子生物学的新技术使最近的工作成为可能,这种新技术能在环境中检测到低浓度的病毒 DNA。
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