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1.Last week, NASA alerted astronauts on the ISS that the station was slowly leaking air.
alert 警告
He wanted to alert people to the activities of the group.
他想警告人们注意这个组织的行动。
2.The Soyuz commander, Sergey Prokopyev, used a heat-resistant "space tape" and a special glue to plug the hole.
plug 塞住
Crews are working to plug a major oil leak.
机组人员正在努力堵一个漏油的大洞。
