It can't enter cells because it's too big and it's too water soluble so it can't go through cell membranes.
它的分子太大了所以无法进入细胞,而且还是水溶性的,所以它也无法穿过细胞膜
There's a lot of, you know, surfing, water sports, skating, stuff like that that I like to do.
可以经常,你知道,可以冲浪、水上运动、滑冰,我喜欢做的那些事。
That creates all sorts of social consequences that we'll talk about sustainability, with shipping water long distances, all the plastic involved, people's distrust of public water systems that's unfounded, and things like that are very interesting and have big public health consequences.
这就产生了很多社会问题,比如我们将要谈到的饮水污染问题,饮用水在长途运输的过程中,会受到各种塑料污染,还有人们对公用自来水系统,毫无理由地不信任,类似这些现象都很有趣,而且会导致重大的公共健康后果
Now this behaves very differently in water because part of it is water soluble, this part is, it's a molecule that would like to dissolve in water and part of it is like oil, it doesn't want to dissolve in water.
它们在水中表现出十分不同性质,因为一部分是水溶性的,这一部分是,是一种可以溶于水的分子,而另一部分就像油,不会溶于水中
There's the water phase, there's the ice cube is the solid phase, and there's some water, gas, vapor, and that's one bar.
里面放一块冰,这是固态;,于是我们得到了水,冰和水蒸气三态共存的点。
They came to draw water, ; and filled the troughs to water their father's flock; but shepherds came and drove them off.
她们来打水,打满了槽,要饮父亲的群羊;,有牧羊的人来,把她们赶走了。
So let's think about water here as our simplest example with oxygen.
让我们讨论,对于氧来说最简单的例子-水。
because when you're up on that point, you see anything that's in the water, anything close to the surface and,
因为当你站在那里的高处,你能看到贴近水面的一切,而且,
Realize that there's this wonderful mechanism in place that allows you to put your toe in the water for several weeks no less and then get a sense, and then decide whether or not this is something for you.
要知道这种好的评分体制哈佛也有,在这种机制下你可以先试听几周,熟悉这一机制,然后再决定这是否适合你。
If both these firms are producing bottled water and it's identical, then the goods themselves are substitutes.
如果两家公司生产同质的瓶装水,那么它们的产品是可以互相替代的
He's got four essences: Earth, fire, water, air.
他认为世界有四大元素,土,火,水,气。
So, we see the building of water holders in these places; there's a very striking one.
所以,我们在这些地方看到了蓄水建筑,有一个很惊人的蓄水池
It's on the water, in the boat and you,and it takes up a lot of time.
在水上,在船上,很花时间。
Geographically it's different. We're 8 hours from the ocean from any water.
地理特征就不同。我们去海边大约有8个小时的路程。
There's water on all sides, so going to the beach if it's sunny.
公园四面环水,所以天气晴朗时可以去海边。
It's on a low bridge near the water, solid wood planks, nice and wide, hand railings made out of solid wood, and you can cross the bridge that way.
另外一座桥离水面近,实木板材质的,又结实又宽,扶手,也是实木材做的,通过这座桥也可以过河。
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