辅助病毒

helper virus的用法和样例：

例句

However, the clinical application of the third-generation adenovirus vectors is hampered by the existance of helper contamination and difficulties in their large-scale production.然而，由于辅助病毒污染的存在及病毒产量有待提高，第三代腺病毒载体的临床应用仍面临一定困难。

情景英语对话：Hailing a Cab(2)

A: Where would you like me to take you? B: I need you to take me to PCC. A: I can do that. B: How long will it take you to get from here to PCC? A: Itll be about 25 minutes. B: You cant get there any faster than that? A: Thats as quick as I can do it

发表于:2018-12-16 / 阅读(34) / 评论(0)

英语情景对话-邻居

小狐外传第69期:戏法

First Mr. Yee did a trick with scarves. 首先易先生用围巾变了一个戏法。 I told you, said Fox. 我说过吧，小狐说。 Then Mr. Yee made his helper vanish. 接着易先生将他的助手变没了。 Ho-hum, said Fox. 哼，小狐说。

发表于:2019-01-29 / 阅读(27) / 评论(0)

小狐外传

Help for the Helper

At age eighteen, I left my home in Brooklyn, New York, and went off to study history at Leeds University in Yorkshire, England. It was an exciting but stressful time in my life, for while trying to adjust to the novelty of unfamiliar surroundings, I

发表于:2019-02-19 / 阅读(92) / 评论(0)

阅读空间

PBS高端访谈:如果希拉里胜选那么她的贸易政策是什么样

GWEN IFILL: But, first: If immigration is one of this year's big policy debates, the other is free trade. And when it comes to the future of how the U.S. does business abroad, the two major candidates are not sounding that far apart. Last week, corre

发表于:2019-02-25 / 阅读(50) / 评论(0)

PBS访谈社会系列

英文幽默笑话：我可以干得慢一些

I Could Do It Slower Patient: What do you charge for pulling a tooth? Dentist: Fifty dollars. Patient: Fifty dollars for a couple of minutes' work? Dentist: Well, I could do it slower, if you like. 我可以干得慢一些病人：拔一颗牙收费多

发表于:2019-02-25 / 阅读(48) / 评论(0)

趣味英语

听播客学英语 190 新年愿望

I have a poem for you today. It is called New Year Resolution, and it is by Edrey Allott. She does not tell us what her New Year resolution is. She just says that she knows that she should have done it a long time ago, but this year she really will.

发表于:2019-03-01 / 阅读(150) / 评论(0)

听播客学英语

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学英语单词

attempted contravention

carrier suppressed double band

carry generation