单词：airless injection engine
单词：airless injection engine 相关文章
ahead ['əhed] ad.在前(头) certainty ['sə:tənti] n.必然(性) doorbell ['dɔ:bel] n.门铃 football ['futbɔ:l] n.足球，足球运动 hurry ['hʌri] n.v.匆忙，仓促，赶紧 make [meik] v.制造，使成为 outside ['aut'said] n.a.外面(的
1200个常用英语口语单词（MP3+文本）
Injection Drug Use Helps Drive HIV/AIDS in Africa Injection drug use has long been a driving factor in the HIV/AIDS epidemic in Eastern Europe and Central Asia. But now, there are signs it's a growing problem in sub-Saharan Africa, as well. The Washi
VOA标准英语2011年(四月)
STEVE INSKEEP, HOST: Philadelphia is looking at a new tool to fight opioid addictions - supervised injection sites. That's where people can safely inject heroin or other opioids under medical supervision. It would be the first such site in the U.S.,
2018年NPR美国国家公共电台1月
If you've gone shopping for a car lately, you might have noticed that fuel economythe number of miles per gallonis creeping up. One reason is a more efficient type of fuel injection, called gas direct injection. Its a feature of half the new cars sol
2016年Scientific American(八)月
DAVID GREENE, HOST: The state of Arkansas has a death penalty problem. The state is rushing to execute death row inmates at an unprecedented pace this month before its supply of lethal drugs expires. The expiration date is important because it's gett
2017年NPR美国国家公共电台4月