单词:
单词: 相关文章
RANDI KAYE, CNN CORRESPONDENT: We take our shoes off, remove our laptops, and toss our bottled water all in the name of safety. But are we any safer today than we were before 9/11? Not exactly, says Bruce Schneier, author and security technologist. B
[00:01.56]Gunpowder [00:03.47]Gunpowder was invented by the Chinese [00:05.73]in the eighth century AD. [00:08.28]Early Chinese scientists discovered [00:10.64]that they could make an explosive substance [00:12.76]by mixing sulphur,charcoal and saltp
Independence Day 词汇典故:独立日 Hello and welcome to the VOA Learning English program Words and Their Stories. Independence Day is a huge celebration in the United States. People celebrate by having parades and picnics and usually end the day
[00:01]R:I feel like kind of a fifth wheel around here. Is there anything I can do? [00:04]A:I don't know. Is there anything you can do? [00:09]R:Well, I can drive that loader. [00:12]I have a Class Two rating. [00:16]A:Be my guest... [00:31]
Lesson 39 Free 1.There's no free lunch. 2.Are you free this afternoon? 3.I give it to you for free. 4.He's very free with his money. 5.He's such a free and easy guy. 6.We had a real free-for-all debate. 7.I don't want a free ride like that. 8.We all
萨拉热窝市中心爆炸,无一人伤亡 SARAJEVO, Feb. 10 (Xinhua) -- A huge explosion was heard in central Sarajevo Monday night, and police said there were no injuries. A local police press officer told Xinhua the explosion occurred at the en