It studies these populations in the past, present and future using quantitative data and mathematical models as tools of analysis.

它使用定量数据和数学模型作为分析工具，研究这些人口在过去、现在和未来的情况。

youdao

It studies these populations, in the past, present and future, using quantitative data and mathematical models as tools of analysis.

它使用定量数据和数学模型作为分析工具，研究这些物体在过去、现在和未来的数量。

youdao

I want to tell you about the past, present and future of the human population. So let's start with a few problems.

我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。

youdao

My father was a veteran of the Korean War, and it really represents the future and the past and present."

VOA: special.2009.11.14

Israel's past and present and future generations form a collective entity, Israel, that collectively assents to the covenant.

犹太人的过去，现在，未来形成了一个共同的存在，全体犹太人都赞成这个契约。

耶鲁公开课 - 旧约导论课程节选

Use this pattern whenever you want to find out about the timing of an event in the past, present, or future.

当你想知道过去、现在或者未来某件事发生的时间时，你都可以使用这个句型。

When 课堂 - SpeakingMax英语口语达人

The most valuable predicting often requires a synthesis of past and present--remembrance of tsunamis past plus an instant read of the sand quivering right now between your toes.

FORBES: Warning--Tsunami

You may find all that all too intrusive, living with the past as present.

NPR: Natural Links in a Long Chain of Being

Here are five marketing realities that can help us bridge the past, present, and future.

FORBES: New Study Predicts Ten Years of Staggering Change. Will Everything You Know About Marketing Soon Be Worthless?