科普園地
You have probably looked up at the sky on a sunny day and were amazed that it was so blue. But have you ever wondered why the sky appears to be this color? Why isn’t it green or purple?
The blue color of the daytime sky is due to a scientific phenomenon called Rayleigh scattering. It’s when sunlight entering the Earth’s atmosphere interacts with gas molecules such as nitrogen and oxygen, causing the light to scatter in all directions. The blue color we see is caused by the shorter wavelength of blue light, which is scattered more than other colors of light by the small gas molecules. As a result, blue light dominates the light we see, giving the sky its blue hue. Violet actually has the shortest wavelength, but since our eyes are less sensitive to violet light, the sky doesn’t appear purple.
You can scatter some sand on the ice so you don’t slip.
在冰上撒點沙子,這樣你就不會滑倒了。
The strong wind scattered the leaves all around.
一陣強風把葉子吹得四散。
The mob began to scatter in all directions after riot police fired tear gas.
鎮暴警察發射催淚瓦斯後,暴民開始四散離開。
There were no people in the square; just a scatter of birds.
廣場上沒有人,只有零星的鳥兒。
The unclear instructions scattered responsibility across the team.
不清楚的指示使責任被攤分到整個團隊。
The strong animal dominated the weak animal.
這隻強壯的動物支配那隻弱小的動物。
The big mountain dominates the landscape.
這座大山俯瞰四周的景色。
The house on the hilltop dominates the whole valley.
山頂上的這間房子可俯瞰整座山谷。
The house on the hilltop overlooks the whole valley.
山頂上的這間房子可俯瞰整座山谷。
The oil lamp gives off a soft glow.
油燈散發出柔和的光。
The shirt glows in the dark.
這件襯衫在暗處會發光。
Mary's eyes glowed with passion when she saw me.
瑪莉見到我時,雙眼散發出熱情的光芒。
As the sun set, the sky started to glow with warm colors.
夕陽西下時,天空開始泛出溫暖的光芒。
The mirror reflects sunlight.
鏡子會反射陽光。
The polls have reflected that welfare is the top issue with voters.
這些民調反應出福利制度才是選民關注的首要議題。
We took a moment to reflect on what we were about to do.
我們花了片刻時間思考我們要怎麼做。
People's actions often reflect their inner thoughts.
人們的行動往往反映出他們內心的想法。
Tom interacts well with other kids at school.
湯姆在學校和其他的小朋友互動良好。
Fred is sensitive to others’ remarks.
弗瑞德對別人的話很敏感。
Don’t mention Donald’s missing dog―he’s very sensitive about that.
不要提到唐納德走失的狗 — 他對那件事非常敏感。
The parents played a role in the education of their children.
這對父母在他們孩子的教育方面扮演重要角色。
The doctor used water vapor to treat my sore throat.
醫生用水蒸氣來治療我的喉嚨痛。