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。
Do you mean present and past participles?
那一定是指现在分词或过去分词了。
They are used as auxiliaries to the present and past perfect tenses.
它们是用作现在完成时和过去完成时的助动词。
The present and past perfect tenses both belong to the perfect tense.
现在完成时和过去完成时都属于完成时态。
If there was ever a monument to Internet flame wars both present and past, this is it.
因为不论是过去还是现在，它都是网络论战的一座丰碑。
Psychotherapy frequently reveals present and past losses, in keeping with known risk factors.
心理治疗常常揭示当前和过去的亏损，与已知的危险因素一致。
The early centuries down to the sixteenth century, Marco Polo, images of present and past.
十六世纪前，马可波罗，现在与过去的形象。
Look up the authors in the authors table by URI, and extract the affiliations, both present and past.
通过uri在authors表中查询作者，提取(现在和过去的)从属关系。
Based on real language materials, this paper describes the existence of the present and past continuous tenses in Hebi dialect, Henan.
本文以现实的语料，说明鹤壁方言中存在“现在进行体”和“过去进行体”。
It is pointed out that using official post convenience includes one's present and past and future official posts and others official posts.
利用职务上的便利应包括利用本人现在的、过去的和将来的职务上的便利及利用他人职务上的便利。
In an exhibition match between the giants of tennis present and past, world No 1 Roger Federer defeated Pete Sampras in straight sets, 6-4, 6-3.
这是一场网坛过去与现在霸主之间的较量。世界头号网球名将费德勒直落两盘以6 - 4和6 - 3战胜美国名将桑普拉斯。
Preview control, an advanced control method, can use future target value and future disturbance as well as present and past information in deciding the control.
预见控制，不仅考虑系统当前的信息，还根据系统的未来目标值和未来干扰值决定当前的控制，是一种先进的控制方法。
A comparison was made between the present and past standards of obvious foreign matters in injection fluid to compare their merit and shortcoming by mathematical statistics.
对注射液中可见异物检查的新旧标准进行比较，评价新老标准的优点与不足，利用数理统计学的方法进行分析。
Her letters conflate past and present.
她的信把过去与现在结合在一起。
Consciousness links past attention to the present and permits the integration of details with perceived ends and purposes.
意识将过去的注意力与现在联系起来，并允许将细节与感知的目的和宗旨结合起来。
You may feel guilt over your past, but you are poisoning the present with the things and circumstances you cannot change.
你可能会对你的过去感到内疚，但这是在用无法改变的事和境况来荼毒你的现在。
You've got to forget the past and start living in the present.
你必须忘掉过去，开始现在的生活。
'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
Ihave eaten是动词eat的现在完成时；Ihad eaten是过去完成时；Iwill have eaten是将来完成时。
In sum, the data revolution is giving us wonderful ways to understand the present and the past.
总而言之，数据革命为我们提供了理解现在和过去的绝佳方式。
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。
I want to tell you about the past, present and future of the human population, so let's start with a few problems.
我想告诉你们关于人类的过去、现在和未来的事情，所以让我们从一些问题入手。
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。
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。
Happiness is not a point of future and not a moment from the past, but a mindset that can be designed into the present.
幸福不是未来的某个节点，也不是过去的某个时刻，而是能够融入到当下的一种心境。
If you are surrounded by problems and cannot stop thinking about the past, try to focus on the present moment.
如果你被问题包围而无法停止对过去的思考，尝试专注于此时此刻吧。
These writings formed a continuous connection between my past, present, and future through events in my life.
这些作品通过我生活中的事件，将我的过去、现在和未来不断地联系在一起。
Visiting the historic center, a World Heritage Site, you may find you are communicating with both the past and the present.
参观历史中心这个世界遗产，你会发现自己是在与过去和现在交流。
You are my past,my present and my future.
你就是我的过去，我的现在和未来。
You are my past, my present and my future.
你就是我的过去，我的现在和未来。
You are my past, my present and my future.
你就是我的过去，我的现在和未来。
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