正文

VOA慢速英语:NASA Developing Food Bars for Mars Flights

2016-12-12来源:VOA

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词汇讲解：

1. nutrition n. 营养学; 营养品; 营养
例句：He was widely regarded as a leading authority on nutrition.
人们普遍认为他是营养学方面的著名权威。

2. explain vt. 讲解，解释
例句：Lastly I must explain that.
最后,我得解释一下那件事。

3. affect vt.影响; 假装; 感动
例句：Nicotine adversely affects the functioning of the heart and arteries
尼古丁会对心脏及动脉功能造成损害。

4. decide vt.决定; 决心; 解决
例句：She decided to do a secretarial course
她决定修一门文秘课程。

5. launch vt.发射; 发动; [计算机]开始（应用程序）
例句：The Queen is to launch a new warship today.
今天女王要主持新军舰下水仪式。