The quantities of phytoplankton in the ocean are changing.

海洋中浮游植物的数量在变化。

youdao

The ecologist is concerned primarily with the quantities of matter and energy that pass through a given ecosystem, and with the rates at which they do so.

生态学家主要关注的是流经某一生态系统的物质和能量的量以及它们的速度。

youdao

The quantities of data involved in such simulated tests are phenomenal.

在这些模拟试验中所包含的数据的大量性非常显著。

youdao

He and the scientists also developed plants that produced higher quantities of grain.

VOA: special.2009.11.10

So, what we can do instead of talking about the ionization energy, z because that's one of our known quantities, so that we can find z effective.

我们做的事可以代替讨论电离能,因为那是我们知道的量子数之一，那是我们可以解出有效的，如果我们重新排列这个方程。

麻省理工公开课 - 化学原理课程节选

And in contrast, in the lower left hand part of the periodic table, these 2 quantities are low, so also what we're going to see is low electronegativity.

相反地，在周期表的左下部分，这两个量的值都很小，因此我们会看到这里的电负性也很低。

麻省理工公开课 - 化学原理课程节选

"The quantities of food we are getting is only enough for one million, " he says.

BBC: Violence leaves Syrians in desperate economic straits

The quantities of rare earths used in technology components are so tiny that higher prices are invisible in the cost to consumers.

ECONOMIST: Rare earths and China

Conducting research on the revenue effects of illegal music consumption requires detailed dataon the quantities of both legal and illegal music consumed by individuals.

FORBES: Music Piracy: Major Studies Conflicted Over Recording Industry Impact