单词：reaction engine
reaction engine的用法和样例：
例句
- The aircraft is powered by a jet engine.这架飞机由喷气发动机驱动。
- The rockets give the planes and missiles enoughspeed to make the ramjet engine workable.这种助推火箭为飞机和导弹提供足够的速度，以使冲压式喷气发动机可以开动工作。
单词：reaction engine 相关文章
THE MAKING OF A NATION -October 10, 2002: Civil Rights Movement By Jeri Watson VOICE 1: This is Richard Rael. VOICE 2: And this is Rich Kleinfeldt with THE MAKING OF A NATION, a VOA Special English pr
The Making of a Nation
EXPLORATIONS - Bat Populations Are Important for Agriculture and the Environment BARBARA KLEIN: Im Barbara Klein. MARIO RITTER: And Im Mario Ritter with EXPLORATIONS in VOA Special English. Today, we learn about the environmental and agricultural imp
2011年VOA慢速英语(九)月
From VOA Learning English, this is the Health Lifestyle report. There may be something in your food that you cannot see and cannot taste. But it could be killing you. It is an artificial oil commonly called trans fat. Trans fat is a toxic chemical th
2018年VOA慢速英语(五)月
Part 2. Green Transporation Festival. Keywords. Green Transporation Festival, oil, environment, reduce, other kinds of fuels. Vocabulary. hydrogen, propane, scooter, hybrid, ethanol. A. You are going to hear a report on green transporation festival.
step by step 3000 第一册
BEIJING, Nov. 4 (Xinhuanet) -- The amount of trans fat and other nutritional information will be marked on the labels of prepackaged food, according to the country's first national standard for food nutrition. The labeling will take effect on Jan 1,
英语新闻
ARI SHAPIRO, HOST: CVID is an acronym you're about to hear a lot. The Trump administration has been using it in the run-up to next week's summit with North Korea. And those four letters have meant different things to different people, as NPR's David
2018年NPR美国国家公共电台6月