单词:fire-heating air pressure
单词:fire-heating air pressure 相关文章
On airplanes, cabin pressure changes during takeoff and landing to help passengers breathe easy at high altitudes. These changes in air pressure may make adults ears feel a little funny, prompting a few yawns to equalize the pressure. But for babies,
今天我们要学的词是trials。 trial, 是审判的意思,变成复数,后面加个s, 一般是指体育比赛的预选赛。 Things are heating up at the U.S. Olympic trials, 美国奥林匹克选拔赛进行得如火如荼。 美国游泳天
今天我们要学的词是trials。 trial, 是审判的意思,变成复数,后面加个s, 一般是指体育比赛的预选赛。 Things are heating up at the U.S. Olympic trials, 美国奥林匹克选拔赛进行得如火如荼。 美国游泳天
GENEVA, Sept. 26 (Xinhua) -- Two million people worldwide are estimated to die from air pollution each year, the Geneva based World Health Organization (WHO) said in its air quality report published on Monday. According to data collected by the WHO f
今天我们要讲的习惯用语都有air这个词。大家都知道air是空气。早在十七世纪,意大利科学家伽利略发现空气似乎没有实质却有重量。后来人们进一步发现高山顶上的空气要比海平面上的空气