VOA慢速英语:How Does Long-Term Space Travel Affect Humans?

1. introduce vt.介绍; 引进; 提出
例句：The Government has introduced a number of other money-saving moves
政府已经采取了其他一些省钱的举措。

2. occur vi.发生; 出现; 闪现
例句：Earthquakes occur frequently in this area.
这一地区经常发生地震。

3. stressful adj.有压力的
例句：I think I've got one of the most stressful jobs there is.
我想我得到的这份工作是其中最繁重的工作之一。

4. meaningful adj.有意义的; 意味深长的; 有意图的
例句：You conducted meaningful market research.
你进行了有目的的市场研究。

5. combat n.格斗，搏斗，战斗
例句：Over 16 million men had died in combat
1,600多万人在战斗中牺牲。

6. decrease n.减少，减小; 减少量
例句：There has been a modest decrease in house prices this year.
房价今年略有下降。

7. undertake vt.承诺; 保证; 承担
例句: She undertook the arduous task of monitoring the elections.
她承担了监督选举的艰巨任务。

8. consider vt.考虑; 把（某人，某事）看作…
例句：The government is being asked to consider a plan to fix the date of the Easter break
人们要求政府考虑确定复活节假期日期的计划。