Before the spacewalk, the astronaut shouldering the historic task will need the help of another to put on a 120kg, non-powered spacesuit for the extra vehicular activity (EVA).

　　在太空行走之前，承担此项历史重任的航天员要先在另一名航天员的帮助下穿上重达120公斤的无动力舱外活动航天服。

　　上述报道中，extra vehicular activity 就是“舱外活动”的英文表达，简称EVA，是我们通常所说 spacewalk(太空行走)的专业说法。

　　WIK I百科介绍说 Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth (a spacewalk) but also applies to an EVA made on the surface of the Moon (a moonwalk)，由此可见，“舱外活动”(EVA)还具体分为 spacewalk (太空行走) 和 moonwalk(月球行走)。

(编辑：Joe)