单词:partial pressure vacuum gauge
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She inspected the carpet for small items. She saw a paper clip and a rubber band. She picked them up. She put them into a little box on the kitchen counter. She plugged in the vacuum cleaner. She turned on the switch. The cat ran out of the room. She
Sonja Pace Israeli troops have begun a partial withdrawal from parts of the Rafah refugee camp in the southern Gaza Strip, where their operations this week have left at least 41 Palestinians dead, sco
Oliver went to Target to buy a new vacuum cleaner. The vacuum cleaners at Target cost $60 to $500. The expensive ones were too bulky and, of course, too expensive. He bought the cheapest one in the store: a Dirt Devil Vibe. Its label claimed that it
Module 4 The natural elements Unit 1 Electricity today [00:11.08]自然世界 今日电的作用 [00:22.15]Read,learn and think [00:25.47]Electricity is very important to us. [00:27.73]电对我们相当重要。 [00:29.99]I'm going to show a video.
This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one
Captain Nemo had picked an odd time to philosophize. 尼摩船长选择这时候来作这种哲学思考,真是太离奇了。 All in all, this reply told me nothing. 总之,他的答复对我没有什么帮助。 May I learn, sir, I asked him, w
This is the VOA Special English Agriculture Report. Mike Henry has a two-hectare farm in Palmer, Alaska. About a year and a half ago, his goat Millie was giving him a hard time. She did not want to be milked. She kicked her back legs and stepped into
A: Honey, the house is such a mess! I need you to help me tidy up a bit. My boss and her husband are coming over for dinner and the house needs to be spotless! B: Im in the middle of something right now. Ill be there in a second. A: This cant wait! I
By Scott Stearns White House 12 September 2007 President Bush gives a nationwide address Thursday in which he is expected to announce the gradual withdrawal of 30,000 troops from Iraq. VOA White House Correspondent Scott Stearns reports, opposition D
CAPE CANAVERAL Two American astronauts will venture outside the International Space Station Monday to stow a failed coolant pump and extend the outpost's Canadian railway. Wearing protective spacesuits in a deadly vacuum(真空) environment, Stephen
RIO DE JANEIRO, Feb. 12 (Xinhua) -- South American football's governing body Conmebol has ordered Brazilian club Gremio to temporarily close a section of its stadium following last month's crush that left five people in hospital. Conmebol officials a
Li Hua 正在往图书馆走,突然,Larry 把她叫住了。Li Hua 在今天的谈话中会学到 两个常用语:what's her face 和thingamajig。 LL: Hey, Li Hua. One of your classmates asked
These are the normal navigational instruments, I replied, and I'm familiar with their uses. 这些是航海家常用的仪器,我答,我知道它们的用法。我现在看见的这个表盘,上面有能转动的针,那不是流体压力计吗?
Jessica在北京学中文,她的中国朋友要是遇到了不知道用美语怎么说的词,就会来请教她。 Jessica: Wow,小小!What are you doing all dolled up! YM: 我今天要去见我最最好的朋友!她是我大学同学,我们都
(以M代表Mary,O代表Officer) M: Good morning. My name is Mary. O: Good morning. Sit down, please. Would you mind if I ask you some questions? M:Of course not. O: What do you go to America for? M: I'd like to study for my Master's Degree. O