stage, phase,period有什么区别?

stage, phase,period有什么区别? stage和phase用法有什么区别stage和phase用法上有什么区别,可否解释出意思后再作出例句, stage phase 意义 有什么区别对于阶段和时期的区别，您能不能用个例子来解释 stage period of life,人生的阶段.请问是在stage后面加s,还是在period后面? bid phase 和 bidding phase 有何异同 stage stage phase out 都有什么意思 period in-period和for-period分布是什么意思,有啥区别?in-period和for-period分别是什么意思，有啥区别？ 我的音箱上有stage phase-to-phase 英语翻译作者：Lubka TchankovaAbstract：In this paper risk identification is investigated as a basic stage in risk management.The risk identification phase as the first stage in the risk management process is presented and its leading role for in stage和at stage有什么区别是不加the的,老师说in stage是时期,at stage是阶段,但有区别 If you were able to choose,which phase/period in the history of western civilization would you prefer to live in?Why? 英语翻译Stage 1:Set Advertising ObjectivesAn advertising objective is a specific communication task to be achieved with a specific target audience during a specified period of time.Stage 2:Set the Advertising BudgetSetting the advertising budget phase是什么意思 “phase out ”