单词：helical spin structure
单词：helical spin structure 相关文章
The worm crawls on the ground. It crawls slowly. She watches it. She picks it up. It wiggles in her hand. She puts it in her mouth. It wiggles in her mouth. She takes it out of her mouth. She puts it back on the ground. It crawls into a hole.
儿童英语小故事
A computer worm is bad news Helen: Hello welcome to Real English from BBC Learning English. I'm Helen. Zo: 大家好，我是刘佳。 Helen: Today we're going to look at words and phrases that have recently become part of the English language. Zo: 地道英语
地道英语在线听
Scientists found a prehistoric ancestor of an arrow worm among a group of fossils at two national parks in Canada. The fossils were found in what is now British Columbia, but was once an ocean. The sea worm was 10 centimeters long and had 50 spines o
2017年VOA慢速英语(八)月
By Gilbert da Costa Abuja 04 April 2008 The global campaign to eradicate the debilitating Guinea worm disease continues, with hopes for eliminating it by 2009. Four countries ended transmission of the disease in 2007. Gilbert da Costa attended a cere
VOA常速英语2008年（四月）
今天我们要学的词是worm。 Worm, 是虫子的意思，用在电脑上，指的就是蠕虫病毒。四月一号愚人节，也是一种恶性电脑蠕虫病毒发作的日子。 Computer experts are watching warily as the Conficker worm strik
英语单词荟萃