单词:photocrosslinking polymer
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Well or Good? Here at VOA, I am a teacher. But outside of work, I am a language learner, too. Having studied three languages, I know that sometimes the simplest words can be the most elusive. 在美国之音节目中,我是一名教师。但是在工
08如何连音(二)sound linking ★★★ 一句中,词后接以/h/ 打头的he him,his her 等词,这个/h/不发音。 Give her a book. /givэ: a buk / Tell him ask her /telim `a:skэ: / What will he do? Has he gone? /hжsi:`g):n/ 特别是
[00:25.62]Photo of the dead [00:30.94]死亡照片 [00:36.97]A white marble cross that marked their graves [00:39.64]had been broken off at the base, [00:42.25]perhaps by vandals or a lightning bolt, [00:45.83]and had fallen on the ground at the head of
Improve Your Writing by Using Concept Maps English learners face a common problem: their writing often lacks clarity and cohesion. That is according to Babi Kruchin and Alan Kennedy who teach at the American Language Program at Columbia University. T
It was beautiful in Washington, DC, this morning! I could see the sun shining and hear birds singing. So, I decided to walk to work. As I walked down 6th Street, I smelled a delicious scent. I followed it and found a lovely French bakery! There, I sa
Many businessmen from countries involved in the Belt and Road Initiatives have found the annualCross-Straits Fair for Economy and Trade in Fuzhou could help them tap into the Chinese market.[Photo: China Plus] The annual Cross-Straits Fair for Econom
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t
This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because
Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c
Lowering the Ceiling on Roof Energy Losses Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because traditional black asphalt roofs heat up in summer and s
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor
Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene
By Sabina Castelfranco Rome 22 January 2006 More than 10,000 people marched in the city of Messina in Sicily to protest the planned construction of a bridge linking the island to mainland Italy. Thous
Studying Sentence Patterns to Improve Your Writing: Part 2 This week, we are going to give you more information about another common pattern in English: the linking verb pattern. To get you started with linking verb patterns, consider this passage fr
Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o
'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded
Photo of my wife 我老婆的照片 A businessman enters a tavern, sits down at the bar, and orders a double martini on the rocks. After he finishes the drink, he peeks inside his shirt pocket, and then orders the bartender to prepare another double
今天我们要学的词是photo op. Photo op是photo opportunity的简称,意思是为做宣传而专门安排的媒体拍照机会。The meeting between the two Presidents was followed by a photo op, 两位总统会面后接受媒体拍照。 一架
Topic1 A Comedian in ChinaA crosstalker, a standup comedian, a comedy teacher, Jessie Appell is better known by his Chinese name 艾杰西. And if you have still not recognized the name, you most probably have watched to this video. Let's listen to a