单词:homoserinelactone
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Section B [00:03.01]2a [00:06.14]Listen. [00:07.46]Erin is calling Teen Talks,a radio [00:11.44]advice program,to get advice about a problem. [00:15.31]Check () Etin's problem. [00:17.61] [00:18.43]Hi,Erin. [00:19.70]Thanks for calling Teen Talk 109.
Maura has two sisters. In this episode, you get to meet one of them! Erin recently visited Maura in Montreal, so Maura took the opportunity to interview her about her travels. Erin has visited many countries and lived abroad, and Maura wanted to ques
今天要讲的惯用语里有个共同的词act。这真是个多义词,但是我们的时间有限说不了那么多,所以今天要说到的act都有表演的意思。比方说,我们要学的第一个习惯用语是:class act。 Class这里
By Doug Levine Washington 09 April 2006 Jazz has always embraced youth. Vocalists Billie Holiday, Ella Fitzgerald and Sarah Vaughan were in their teens when they were first discovered. So were Nat
Two-time U.S. Olympian Erin Hamlin is the first American woman to win a luge world championship Two-time U.S. Olympian Erin Hamlin is the first American woman to win a luge world championship. In Vancouver, she is attempting to become the first U.S.
I can not escape being troubled by the fact that we have in place a policy that forces young men and women to lie about who they are in order to defend their fellow citizens -- Admiral Mike Mullen The top U.S. military officer has endorsed President