单词:insertion of blades
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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
英文版《你爱不爱我》 《Do You Love Me Or Not》 演唱:Bosson(瑞典) You find a reason to keep me balanced 你找个理由让我平衡 You find an excuse to make me accepted 你找个借口让我接受 I know what you are thinking now 我知道你现在的想法 It`s you don`t kn
This is Scientific American's 60-Second Science, I'm Cynthia Graber. This will just take a minute. It sounds like the title to a Rudyard Kipling tale: how the turtle got its shell. But its actually a question that has puzzled scientists. After all, n
中文 英文 缩写 本方/本局 home side/host office 本建筑物以外的/机房以外的/用户房间外的/宅外的/不放在现场的/离站的/楼外的 off-premises 本局端 local end 本局