单词：ectoblast
[医] 外胚层, 外膜
单词：ectoblast 相关文章
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白领美丽英文诵典365
Grammar Girl here. Today's topic is subject-verb agreement, and I'm doing something a little different. This week I have a guest writer for the show, my long-time copy editor Bonnie Trenga, the author of The Curious Case of the Misplaced Modifier. Oh
英语语法 Grammar Girl
DEVELOPMENT REPORT -February 18, 2002: Infectious Diseases By Jill Moss This is the VOA Special English Development Report. The World Health Organization and several other United Nations agencies are
农业与发展
A: Were you able to get a look at the suspect's face? B: Yes. I know exactly what he looks like. A: I must ask you to pick him out of a line-up. B: That won't be a problem. A: Look closely at the five men in this line-up. B: I am looking. A: Do you s
英语情景对话-犯罪
A: Did you see who the suspect was? B: I got a perfect look at the suspect. A: Would you be able to pick him out of a line-up? B: That'll be easy. A: Please take a careful look at these five men. B: Okay. A: Is the suspect in this line-up? B: I see h
英语情景对话-犯罪
A: Did you get a good look at the suspect? B: I got a great look at him. A: Do you think you could pick him out of a line-up? B: I can do that. A: Could you please look at the five men in this line-up? B: All right. A: Do you recognize the suspect? B
英语情景对话-犯罪
What Modern America Expects of Dads Welcome to This Is America from VOA Learning English. I'm Kelly Jean Kelly. And I'm Bob Doughty. This week on our program, we look at modern changes in the American father. Moms Are Great. But What About Dads? Fath
2013年VOA慢速英语(六)月
Technology Report - A Mobile App in Delhi Aims to Protect Women 科技报道 - 一款保护女性安全的手机应用程序 This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道。 More than twenty thousand
2012年VOA慢速英语(一)月
Todd: OK. Ramon, we're going to talk about opposites. Ramon: OK. Todd: What is big? Ramon: The earth is big. Todd: Yeah, I agree. What is small? Ramon: I'm small on the earth. Todd: That's true. How much do you weigh? Ramon: I weigh 65. Todd: Wow! 65
原版英语对话1000个
A: How can I help you today? B: I am returning something that I bought yesterday. A: What would you like to return? B: I'm returning a cellphone. A: Was there somethinig wrong with it? B: It's defective. A: What isn't working on it? B: It keeps turni
购物英语对话
A: Did you go to school today? B: Of course. Did you? A: I didn't want to, so I didn't. B: That's sad, but have you gone to the movies recently? A: That's a switch. B: I'm serious, have you? A: No, I haven't. Why? B: I really want to go to the movies
英语闲谈
A: Did you make it to school today? B: I always do. Did you go to school today? A: No, I didn't. B: You should have, but have you seen any movies lately? A: That was an odd change of subject. B: Maybe it was, but answer the question. A: No, not recen
英语闲谈
A: Did you even bother to go to school today? B: Yeah, I went. Did you go? A: No, I didn't feel like it. B: That's nice, have you been to the movies lately? A: No, but that was a random change of subject. B: It may have been random, but have you? A:
英语闲谈
BEIJING, Aug. 7 (Xinhua) -- Infectious diseases claimed 1,669 lives on the Chinese mainland in July, with AIDS contributing to 70 percent of the deaths, the Ministry of Health (MOH) said Tuesday. A total of 5,552 AIDS cases, which is categorized as a
英语新闻
The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field
英语新闻
Keep Your Direction 坚持你的方向 What would you do if you failed? Many people may choose to give up． However， the surest way to success is to keep your direction and stick to your goal．On your way to success， you must keep your directio
阅读空间
Fifty-percent Expectation 50%的希望 I believe in the 50-percent theory. Half the time things are better than normal; the other half, they are worse. I believe life is a pendulum swing. It takes time and experience to understand what normal is, and
阅读空间
Crazy baby, the spirit of the motion 疯狂的宝贝，舞动的精灵 Dont let me feel devotion, 不要让我沉溺于你 And every day Ill always love you 每一天我都永远爱你 Baby, so let me see the fire 宝贝，让我看到你的热情 Be
好听的英文歌曲
The cases of the five suspected al-Qaida militants believed to have planned the September 11, 2001, terror attacks on the United States have been formally referred to a military tribunal. The self-proclaimed mastermind of the 9/11 attacks, Khalid She
英语新闻