1. The name of this Soviet astronaut was Leonov; and the date was March 18, 1965.
    这位苏联宇航员的名字叫做列昂诺夫; 那是1965年3月18日.

2. The name of this Soviet astronaut was Leonov; and the date was March 18, 1965.
    这位苏联宇航员的名字叫做列昂诺夫; 那是1965年3月18日.

3. Neil Armstrong is the first astronaut to walk on the moon.
    尼尔・阿姆斯壮是第一位在月球漫步的太空人。

4. An astronaut will attempt to leave the stationary spaceship and then return to it.
    一名宇航员试着离开静止不动的宇宙飞船，然后再返回。