That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes.

这意味着更多的海洋生物正在被捕捞，所以现在和过去之间的真正差异可能比捕捞量变化所记录的更糟糕。

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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。

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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。

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Today we look up into the skies to explore the past and present of the tallest buildings in the world.

VOA: special.2010.03.31

The meaning of Welles is that the past is simply dead what we do in present is creating myth about it.

威尔斯想要表达的就是过去已经逝去了,而我们今天做的仅是创造神话。

麻省理工公开课 - 电影哲学课程节选

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

Such a state of affairs, he said, had existed in the past, existed in the present and threatened to continue in the future.

ECONOMIST: In the name of Islam

Delivering a travelogue mixed with flashbacks of his escape from Vietnam and then life in America, Pham, 32, delves into the intangible shades of living in "halves" - half East, half West, half in the past, half in the present.

CNN: In Search Of A Definition

Cashman is in many ways like his iconic players, drawing on the memories of the past for confidence in the present.

WSJ: New York Yankees: Down but Not Out��Brian Cashman