单词:double track line
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There is a race today. He puts on his shorts. He puts on his sneakers. He goes to the track. It is a one-mile race. Other boys show up at the starting line. The race starts. All the boys run fast. They run around the track four times. The race ends.
DSB Direct Satellite Broadcast 直接卫星广播 DSB Double SideBand 双边带 DSBRC Double SideBand Reduced Carrier 双边带减幅载波 DSBSC Double SideBand Suppressed Carrier 双边带抑制载波
A unique array of underwater listening devices stretches 3,000 kilometers along the west coast of North America to track marine life along the continental shelf. It's like giving fish a cell phone, says Pacific Ocean Shelf Tracking (POST) executive d
Early American Railroads Shape Modern Language 美国早期铁路塑造了现代语言 Now, the VOA Learning English program Words and Their Stories. Each week, we tell about American expressions and where they come from. Today we talk about railroad
Exercise 6-2 : Double Vowel with R CD 3 Track 44 Refer to the subsequent lists of sounds and words as you work through each of the directions thatfollow them. Repeat each sound, first the vowel and then the [ər], and each word in columns 1 to 3. We
Exercise 10-1 : When S Becomes Z CD 4 Track 31 Under Contrast, in the list that follows, notice how the voiced wordis drawn out and then repeat theword after me. Both voiced and unvoiced diphthongs have the underlying structure of the tone shift,or t
Exercise 8-4: Bit or Beat? Bid orBead? CD 4 Track 18 Read each column down. Next, contrast the singleand double tense vowels with each other; and thesingle and double lax vowels with each other. Finally read all four across. 图片1 Note Bear in mind
Double, Double play pause stop mute unmute max volume 00:0005:28repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. OPHIRA EISENBERG, HOST: Now it's time to
Charlotte climbed to a point at the top of the left hand side of the web. 夏洛爬上网顶左边。 Swinging her spinnerets into position, she attached her thread and then dropped down. 它把它的吐丝器晃到位,伴着丝往下送。 As she
请看相关报道: The two drills are meant to test emergency procedures as the subway operator prepares for the approaching World Expo and rising passenger numbers. 这两场演练旨在测试上海地铁应对紧急事故的能力。 In the exer
The eight Strategic and Economic Dialogue kicks off in Beijing today (Monday), and senior Chinese and US officials gather to discuss a wide range of economic issues -- from macroeconomic policies to industrial overcapacity and trade disputes. Experts
Academics and officials from China and the United States are expecting the SED Dialogue to give China-U.S. economic ties a substantial boost. Its possible that the new US president wouldn't have formed a full-member administration in the same time pe
elevated railway, overhead railway, aerial railway 高架铁路 mine railway 矿区铁路 funicular (railway) 缆索铁路,登山铁路 light railway line 轻便铁道 urban railway 市区铁路 rai
vibration 振动 sound 音 tone 音(乐音) musical tone 乐音 noise 噪音 acoustics 声学 psychoacoustics 心理声学 frequency 频率 intensity 强度 time 时间 wave form 波形 pitch 音高 loudness 响度 duration 时值 timbre 音色 (tone
vibration 振动 sound 音 tone 音(乐音) musical tone 乐音 noise 噪音 acoustics 声学 psychoacoustics 心理声学 frequency 频率 intensity 强度 time 时间 wave form 波形 pitch 音高 loudness 响度 duration 时值 timbre 音色 (tone
The president has expanded an advisory committee on stimulating business abroad, and says his administration's efforts to boost the exports of U.S. goods and business around the world are off to a solid start. American exports grew almost 17 percent
Paralympics Roundup: China still on top, Djibouti runner touch world LONDON, Sept. 1 (Xinhua) -- Yang Liwan took the gold in the women's shot put - F54/55/56 here on Saturday, lifting China's gold medal tally up to 20 after three days of Paralympic a
Looks like a comfortable and fun experience travelling with the new trains. Pandeng. And surely, with summer holidays approaching, we expect to see a boost in domestic trips. Tongxuan, any updates about cargo trains? The number of cargo trains connec
Who said I was an angel? Who said I was an angel? Oh yeah We was just a moment, nothing serious Never really paid it no mind Dropped the back side, you're paying attention Shakin' all that, ah... Should've never not kept your word Woulda had a reason