单词：Tetracyclosqualene
单词：Tetracyclosqualene 相关文章
Tracy looked at the flag. The flag is red, white, and blue. It has 50 white stars. The white stars are on a blue square. The flag has six white stripes. It has seven red stripes. All the stripes are horizontal. They are not vertical. The stripes do n
超级简单英语阅读
Cloze: Stingers of the Sea 海中刺客 ── 水母 Given impressive-sounding names like Portuguese man-of-war, jellyfish are certainly respected and feared by humans. Not exactly a fish, and lacking a spine, this creature has a single body cavity
双语有声阅读
来自美国创作歌手Tracy Chapman在1988年发行的首支个人单曲，本周重新打榜即空降第四名。简单流畅的民谣旋律，这首Fast Car慢慢品味起来，余韵悠长。 Fast Car Tracy Chapman You got a fast car I want a ti
天籁音乐
Oum Sok began working as a cyclo driver when he was 18. He says the city has become very expensive over the years, making it much harder to earn a living. New York has its yellow cab. London has its red bus. But Phnom Penh has its cyclo - a three-whe
VOA标准英语2010年(六)月
The State Department said Thursday an agreement for the start of direct peace talks between Israel and the Palestinians is close to completion. The deal will apparently be sealed by statements from the United States and the International Middle East
VOA标准英语2010年(八)月