您要查找的是不是：
- Alcoholics often suffer from periods of oblivion. 饮酒过度的人常常失去记忆。
- We have three periods of chemistry a week. 我们一星期三节化学课。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- period of seedling establishment 返青期
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- We have four periods of English a week. 我们每星期上四节英语课。
- Which period of history are you studying? 你正在学哪一段历史？
- A Study of Seedling Grading of Mesua ferrea L. 铁力木苗木分级研究。
- This was the most difficult period of his life. 这是他一生中最艰难的时期。
- A condition, time, or period of flowering. 花期一种开花的状态、一段开花的时间或时期
- The capital cost is amortizable over a period of ten years. 资本费用可在十年之内分期偿还。
- The new government ushered in a period of prosperity. 新政府的成立带来了一个繁荣的时期。
- The lectureship is tenable for a period of three years. 讲师这一职位任期三年。
- In a short period of time he grew into a great communist fighter. 在很短时期中，他成长为一名伟大的共产产义战士。
- The act or a period of observing; surveillance. 观察; 警戒观察或监视的行为或时间
- The period of service of a minister. 牧师任期充当牧师的时限
- A period of such abstention or self-denial. 断食期，节食期这种戒除或自我克制的时期
- She has bouts of hard work followed by long periods of inactivity. 她总是努力干上一阵，然后一呆就是很长时间。
- After a period of rapid inflation, price have now reach a plateau. 经急剧通货膨胀之后物价现已趋于平稳。
- At any period of history it is the unemployed who find life to be a bed of thorns. 无论在哪一个历史时期，感到生活是一种煎熬的总是失业者。
