而如果这两种介质的密度相差较大，就像空气和水那样，那么大部分的能量将会折射回来，只有一小部分会继续传播进入到新的介质中。
If the two media have really different densities, like air and water, then most of the energy is going to be reflected back, very little of it will keep going and get transmitted into the new medium.
能量可以穿过杯壁流动，但是我在顶上加了盖子，所以水不能跑出来。
Energy can flow across the glass but I put a lid on top, and so the water can't get out.
驱动蒸汽机车的能量可以储存在除水以外的其他物质中。
Energy to drive a steam locomotive can be stored in other materials besides water.
它们当中的一些很有能量，足以让水震动。
日常摄入的水、食物和各类能量与输出的污水、固体废物、空气污染物、能源和经过某种转化的物质相匹配。
A daily input of water, food, and energy of various kinds is matched by an output of sewage, solid waste, air pollutants, energy, and materials that have been transformed in some way.
之后，捐赠者可能会得到一些果汁或水，也许还有水果来给他们提供能量。
Afterward, the donors may receive some juice or water and maybe fruit to give them energy.
你的身体需要水来提供能量和保持凉快。
这样的火星环境也许包含了一些基本的生命要素——包括水，有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life-including water, organic carbon and a source of energy to sustain the microbes' metabolism.
这股能量将水加热，然后通过管子输送到蒸汽发生器中。
The energy heats up the water, which is piped out to a steam generator.
研究人员们认为设计出了一种比乙醇的能量密度高出40%的生物燃料，而且它排斥水并能在制造速度上相对快捷。
The researchers think they have devised a biofuel that has a 40% higher energy density than ethanol, that repels water and that can be made relatively speedily.
这样的火星环境也许包含了一些基本的生命要素——包括水，有机碳和维持微生物新陈代谢的能量源。
Such an environment would have to contain the basic ingredients of life — including water, organic carbon and a source of energy to sustain the microbes' metabolism.
消费者可能早就认识到生产商品所需的能量和产生的污染，但是他们如果知道为了生产一些日用品消耗多少水之后还是可能会感到惊讶。
Consumers may already be aware of the environmental impact of producing goods in terms of energy or pollution, but they might be surprised to learn how much water is needed to create some daily goods.
食物中的分子——特别是水和脂肪——吸收了它的能量并高速振动导致迅速升温并加热分子周围的食物。
The molecules in food-especially water and fat-absorb this energy and wiggle at high speeds, causing them to heat rapidly and warm the surrounding food.
室内耕作可以在任何水和能量供应充足的地方进行。
Indoor farming can take place anywhere that adequate water and energy can be supplied.
地球上所有的生命都需要水、碳基有机分子和某种能量来源——不是太阳能就是化学能。
All life on Earth needs water, carbon-based organic molecules, and an energy source, either solar or chemical.
它只需简单培训，又无需外部能量、电、设备、干净的水或无菌环境。
Only minimal training is required and no external power, electricity, equipment, clean water, or sterile environment is needed.
该装置被比作在对植物在光合作用中利用二氧化碳、水和阳光制造能量的过程进行仿生。
It has been suggested that the device mimics plants, which also use carbon dioxide, water and sunlight to create energy as part of the process of photosynthesis.
为了降低能量，这些表面活性剂通过吸附在气液分界面上从而把它们的尾巴保护起来不碰到水，如果在溶液里的话，则凝聚成胶束。
To minimize energy, the surfactants shield their tails from water by adsorbing at the air-water interfaces or, when in solution, aggregating into micelles.
带上零食和水补充能量，鞋子要舒适，多穿几件衣服，甚至要把手机充电器带上。
Take along healthy snacks and water to keep your energy up, wear comfortable shoes, dress in layers and, yes, even bring a phone charger.
它需要水去产生我们开车，运输蔬菜和使用烤箱的能量。
It takes water to create the power we use to drive our cars, transport our groceries, and run our toaster ovens.
热带风暴和飓风的能量来自与温暖的海洋表层水，和大西洋的变暖。
Tropical storms and hurricanes derive energy from warm ocean surface waters, and the Atlantic ocean experienced record warmth, according to the u.
雪和冰反射了大概超过90%左的太阳能量，然而，附着在冰层上方的烟尘，会加热下方冰层，将他们融化成水。
Snow and ice normally reflects much of the sun's energy — up to 90 percent — back the way it came. But a layer of soot on top of the ice will absorb the sunlight, warm the ice beneath, and melt it.
水、能量、通信的整合也将促使生活成本的下降。
It will also drive living costs down by merging water, energy, and telecommunications in the region.
所以加在一起说来就是：吃肉浪费和污染我们的天然资源-所需的水、土地和能量是植物性饮食的许多倍（这本身就是道德上的迫切需要）。
So add it all up: Eating meat wastes and pollutes our naturalresources -- requiring many times the water, land and energy of eatingplants (a moral imperative on its own).
水会产生电磁能量让我们的身体更健康。
The reason for that is because water creates electrical and magnetic energy in every cell of the body and provides a natural boost of power.
和其他氢能源车一样，Riversimple Ur banCar (RUC)采用燃料电池，电池将来自空气的氢和氧进行混合释放能量，除了水不排放任何有害物质。
Like other hydrogen cars, the Riversimple Urban car (RUC) is powered by a fuel cell that combines hydrogen with oxygen from the air to release energy and nothing more toxic than water.
要有天然的声音，好像室内有着海洋或雨水在奏乐，应该认为水是有益能量的象征。
Have nature sounds, such as the ocean or rain playing in the room. Water is supposed to be a symbol of positive energy.
核爆炸会释放出高能量的光和热，破坏力巨大的压力波，而且四处飘散的放射性物质会污染数周围英里内的空气，水，和地表。
A nuclear blast is an explosion with intense light and heat, a damaging pressure wave, and widespread radioactive material that can contaminate the air, water, and ground surfaces for miles around.
核爆炸会释放出高能量的光和热，破坏力巨大的压力波，而且四处飘散的放射性物质会污染数周围英里内的空气，水，和地表。
A nuclear blast is an explosion with intense light and heat, a damaging pressure wave, and widespread radioactive material that can contaminate the air, water, and ground surfaces for miles around.
应用推荐