单词:emergency engine
单词:emergency engine 相关文章
[00:04.57]Excitement fills the early morning air as you arrive at learn to recognize and name each part of the parachute. [00:19.17]You also learn what each part does. [00:22.05]The excitement builds as your teacher describes each stetp it of the jum
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[00:07.58]Igor Sikorsky was born in the city of Kiev, Russia; on May 25, 1889. [00:16.12]His mother was a doctor. [00:15.12]His father was a professor of psychology. [00:18.59]Igor became interested in science when he was very young. [00:23.82]He was
It was a chilly spring night. He was staying at a hotel. He was a runner. He had been running for 20 years. It was good for his health. He was 38 years old. He had two young sons. They often went running with him. But they were at home. He put on his
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Fire Dept. shoulders costs in neighborhoods lacking doctors and medical clinics Chris Simkins | Washington, DC 20 November 2009 In large cities like Washington, to ensure the fastest response to medical calls, fire departments dispatch trucks carryi