The uv index is a measure of the solar uv ( ultraviolet ) intensity at the earth s surface relevant to the effect on human skin 紫外线指数是量度在地球表面太阳紫外线影响人类皮肤的程度。紫外线对人类皮肤的损害是根据
You ll travel through a mysterious world deep below the earth s surface . watch out when the volcano erupts and sends you hurtling out 深入地心的途中危机重重，当心火山爆发将您从不可思议的海底世界刮起，并在瞬间急速下坠！
Will include a global warming of the earth s surface and the lower atmosphere as warming up is the simplest way for the climate to get rid of the extra energy 这转变可包括全球性的地球表面及大气低层变暖，因为这样可以将过剩的辐射排放出外。
The earth is covered by a blanket of gases which allows light energy from the sun to reach the earth s surface , where it is converted to heat energy 所谓温室效应，就是太阳短波辐射可以透过大气射入地面，而地面增暖后放出的长波辐射却被大气中的二氧化碳等物质所吸收。
The earth is covered by a blanket of gases which allows light energy from the sun to reach the earth s surface , where it is converted to heat energy 所谓温室效应，就是太阳短波辐射可以透过大气射入地面，而地面增暖后放出的长波辐射却被大气中的二氧化碳等物质所吸收。
They lead to two bulges of water on the earth s surface . therefore , we have two high tides per day . in addition to the moon , the sun also attracts water on earth 由于地球每天会在这椭圆形的海水中转上一圈，所以同一地点会经过这两个隆起部分各一次，出现了一天两次潮涨的现象。
All uv - c and most of the uv - b are absorbed by the atmosphere . uv radiation reaching the earth s surface consists mostly of uv - a and some uv - b . ultraviolet radiation and human health 所有紫外线c和大部分紫外线b会被大气层所吸收，到达地面上的紫外线大多是紫外线a而小部分是紫外线b 。
Our mineral cosmetics are loose powders without fillers added to them . the powders are finely crushed minerals that have been extracted from the earth s surface Geoflair矿石彩妆是以矿物质成份为主，透过复杂的生化科技研制而成的矿物质色料，除必要的成份外，并没有添加其它无义意的填充物质。
With more greenhouse gases released to the atmosphere due to human activity , more infrared radiation will be trapped in the earth s surface which contributes to the enhanced greenhouse effect 但由于人类活动释放出大量的温室气体，结果让更多红外线辐射被折返到地面上，加强了温室效应的作用。
When the electric field arising from the piling up of charges reaches a certain breakdown value , lightning discharges take place between clouds or between cloud and the earth s surface 当电荷累积而形成的电压过大时，云与云之间或云与地之间就会出现闪电放电现象，放电通道周围的空气会急剧膨胀而产生隆隆雷声。
