periods

During these periods the birds will lie on the cage floor as if trying to lay or hatch eggs.

这些时期，鸟儿会趴在笼底，好像在下蛋或孵蛋。

His painting went through both representational and abstract periods.

他的绘画经历了具象风格和抽象风格两个阶段。

The training covers extended periods in obstetrics and gynaecology.

该培训包括产科学和妇科学的增加课时。

The school day is divided into seven periods.

学校一天有七节课.

There were periods of sulking, of pronounced distance, of coldness.

沉闷、明显不友好和冷淡的场面多次出现。

Scientists are experimenting to find ways to ensure the viability of seeds for even longer periods of time.

正如我们所说，科学家正在试验努力寻找让种子的生命力更加延长的方法。

The workload can be evened out, instead of the shop having busy times and slack periods.

商其工作量可以平均开来，不像商店那样有时很忙，有时很闲。

He's only away for short periods, a week at the longest.

他只是短期外出, 最多一周.

They had undoubtedly made progress in the six years that separated the two periods.

毫无疑问，他们在这两个时期相隔的6年间取得了进展。

Life often seems to be marked off into different periods: schooldays, marriage, old age.

生命似乎分为三个不同时期: 学生时代, 结婚, 老年.

Long dry periods wasted the land.

长期干旱使土地荒芜了.

He has spent periods in prison, where he was gruesomely tortured.

他坐过几次牢，在牢里受到非人的折磨。

During peak periods, reservations are difficult to make at some of the hotels.

在高峰时期，有些酒店很难预订到房间。

Extra staff have been taken on to cover busy periods.

额外雇用了一些员工来应付繁忙时期。

one of the most prolific periods in her career

她的创作生涯中成果最丰的时期之一