The paddocks will need water. Some farmers design paths for animals from different paddocks to drink from a common watering place.

VOA: special.2010.01.19

You need a functional form that connects the value at one state of matter, the freezing point of water to another phase change, the boiling point of water.

你需要一个函数形式来,连接物质某个态对应的温度值，如水的冰点，和另一个相变,如水的沸点。

麻省理工公开课 - 热力学与动力学课程节选

So inside the cell mostly water, outside the cell mostly water, but I need to separate my water from the water outside.

那么细胞内大多是水,细胞外大多也是水,但我需要将体内的和体外的水隔离开

耶鲁公开课 - 生物医学工程探索课程节选

There is also something else you will need to make the solar water heater work -- the sun.

VOA: special.2009.04.20

So I need to find out the heats of formation of the iron oxide and the water.

所以我需要找出氧化铁和,水的生成热，如果我这么做了。

麻省理工公开课 - 热力学与动力学课程节选

It can quickly become dry. It will need water two times a day for at least three months.

VOA: special.2009.07.07

But people think they need to have water with them all the time.

而人们认为他们确实要时时刻刻都带着水

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The paddocks will need water. Some farmers design a path for animals from different paddocks to drink from a common watering place.

VOA: special.2009.01.06

We shouldn't, just because there are biases and mistakes that potentially can be made, it doesn't mean we need to throw out the baby with the bath water and stop studying ourselves.

我们不应该，只是因为会有潜在的偏颇和错误，这并不意味着我们要因噎废食,停止探究自己。

哈佛公开课 - 幸福课课程节选

They say we should drink water even before we start to feel like we need something to drink.

VOA: special.2010.07.27

But we've been so completely socialized into thinking two things: one is that we need water with us all the time; and second we have to buy it.

但如今我们都对以下两个观念习以为常了,第一是我们每时每刻都需要水,第二是我们要花钱买水

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Experts say cabbage does not need full sun and grows easily if you water it regularly and protect against insects and disease.

VOA: special.2009.03.03

The amount of water that you need to have the optimal sort of concentrations of things is determined by how much urine your kidneys produce and how much they excrete each day.

为了保持体内物质的理想浓度,所需的水量,取决于肾脏每天产生,以及排出体外的尿量

耶鲁公开课 - 生物医学工程探索课程节选

We need to add that doctors also say it is possible to drink too much water.

VOA: special.2010.07.27

You need to know if it's an equilibrium, and you also need to know how many components you have in your system So, a glass of ice water with an ice cube in it, which is a heterogeneous system, has only one component, which is water, H2O.

要知道它是不是平衡的，你还需要知道,你的系统中有多少组分,一杯放了冰块的水，虽然它是个非均匀系统，但它只有一种组分，那就是水。

麻省理工公开课 - 热力学与动力学课程节选

Water regularly during the first month. After that, parsley does not need very much water.

VOA: special.2009.06.02

Life is thought to need both water and the right chemicals to guarantee survival.

VOA: special.2010.05.25

When you put a small seedling in, the roots are not deep enough to go into that water reservoir, so we need to bring the water up to the plant."

VOA: special.2011.06.14

The resting plants have no leaves but still need water.

VOA: special.2010.06.15

In dry conditions they will need more water.

VOA: special.2010.06.29

There is an urgent need for medical personnel to attend to their needs, as well as drinking water."

VOA: standard.2009.09.06

And to do that, we need a lot of surveys and geological surveys on water preservation systems.

VOA: standard.2009.10.06

A spokesman says relief workers hope to improve the process of water distribution, and that they desperately need more food,tents, and medical supplies.

VOA: standard.2010.02.02

It says many are in urgent need of health and educational services, nutritional support, access to clean water and sanitation, as well as protection.

VOA: standard.2009.07.03

He says ground troops need to secure drop zones for the heavy pallets of water, food and medicine, and that they need vehicles and other capabilities to secure and distribute the aid.

VOA: standard.2010.01.19

"They need shelter,clean water and basic sanitation facilities.

VOA: standard.2009.08.21

"The people of Haiti will have the full support of the United States in the urgent effort to rescue those trapped beneath the rubble and to deliver the humanitarian relief the food,water and medicine that Haitians will need in the coming days,".

VOA: standard.2010.01.13

The cattle are very thirsty at this point, the rains have not come yet, they need to get to the water points, and water points are dried up all along those regular migration routes, and that has been one of the causes of the friction."

VOA: standard.2010.03.23