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On November 3， 1961， the Soviet Union launched1 the first animal into space—a dog named Laika—aboard the Sputnik 2 spacecraft.
Laika， part Siberian husky， lived as a stray on the Moscow streets before being enlisted2 into the Soviet space program. Laika survived for several days as a passenger in the USSR’s second artificial3 Earth satellite， kept alive by a sophisticated4 life-support system. Electrodes attached5 to her body provided scientists on the ground with important information about the biological effects of space travel. She died after the batteries of her life-support system ran down.
At least a dozen more Russian dogs were launched into space in preparation for the first manned6 Soviet space mission， and at least five of these dogs died in flight.
On April 12， 1961， Soviet cosmonaut7 Yuri Gagarin became the first human to travel into space， aboard the spacecraft Vostok 1. He orbited8 Earth once before landing safely in the USSR.
1961年11月3日，一只名為莱卡的狗搭乘（前）苏联发射的“史普尼克2号”宇宙飞船，成为进入太空的第一只动物。
莱卡有部分西伯利亚哈士奇血统，在入选苏联太空计划之前，曾在莫斯科街头流浪。莱卡作为苏联第二颗人造地球卫星的乘客存活了好几天，她依靠复杂的生命支持系统生存。附着在她身上的电极为地面上的科学家提供了有关太空旅行中生物效应方面的重要信息。在生命支持系统的电池耗尽后，她就死亡了。
为了准备苏联的第一次太空载人飞行，至少还有十几条俄罗斯犬被发射到太空，其中至少有五只在飞行中死亡。
1961年4月12日，（前）苏联宇航员尤里·加加林成为第一个乘坐“东方一号”宇宙飞船进入太空的人类。绕地球一周后，他安全降落在（前）苏联境内。
Notes
1. launch vt. 发射（导弹、火箭等）;发起，发动
2. enlist vi. 支持;从军;应募;vt. 使入伍;征募
3. artificial adj. 人造的
4. sophisticated
Laika， part Siberian husky， lived as a stray on the Moscow streets before being enlisted2 into the Soviet space program. Laika survived for several days as a passenger in the USSR’s second artificial3 Earth satellite， kept alive by a sophisticated4 life-support system. Electrodes attached5 to her body provided scientists on the ground with important information about the biological effects of space travel. She died after the batteries of her life-support system ran down.
At least a dozen more Russian dogs were launched into space in preparation for the first manned6 Soviet space mission， and at least five of these dogs died in flight.
On April 12， 1961， Soviet cosmonaut7 Yuri Gagarin became the first human to travel into space， aboard the spacecraft Vostok 1. He orbited8 Earth once before landing safely in the USSR.
1961年11月3日，一只名為莱卡的狗搭乘（前）苏联发射的“史普尼克2号”宇宙飞船，成为进入太空的第一只动物。
莱卡有部分西伯利亚哈士奇血统，在入选苏联太空计划之前，曾在莫斯科街头流浪。莱卡作为苏联第二颗人造地球卫星的乘客存活了好几天，她依靠复杂的生命支持系统生存。附着在她身上的电极为地面上的科学家提供了有关太空旅行中生物效应方面的重要信息。在生命支持系统的电池耗尽后，她就死亡了。
为了准备苏联的第一次太空载人飞行，至少还有十几条俄罗斯犬被发射到太空，其中至少有五只在飞行中死亡。
1961年4月12日，（前）苏联宇航员尤里·加加林成为第一个乘坐“东方一号”宇宙飞船进入太空的人类。绕地球一周后，他安全降落在（前）苏联境内。
Notes
1. launch vt. 发射（导弹、火箭等）;发起，发动
2. enlist vi. 支持;从军;应募;vt. 使入伍;征募
3. artificial adj. 人造的
4. sophisticated