（1）substantial
a. （fml.） 富裕的，富有的
大量的；实质的；内容充实的
n.本质；重要材料
eg.The thesis may at first strike one as extreme, but substantial evidence exists to support it.
这一论文起初给人以偏激的印象，但是存在大量的证据支持这一观点。
（2）conducive
adj.有益的；有助于…的
be conducive to sth
有助于某事，有益于某事
（3）abort
v.使中止，使夭折
eg.The space mission had to be aborted because of mechanical trouble.
(4)accession
n.就职，即位，正式加入
eg.His accession to power was sudden.
(5)accessory
a.附属的
n.附件，配件 从犯，包庇犯
an accessory to…… ……的从犯
（6）accountability
n.负有责任，负有义务
accout解释说明 accountable 负有责任的
accounting 会计行业，会计工作
accountable to sb for sth
对……负责任
eg.The power of accountability was a big theme that I saw in everyone that I met.
(7)adjacent
a.临近的 ，毗连的
be adjacent to 与……毗连
eg.Bree is in the boy's locker room adjacent to the pool.
(8)adverse
a.敌对的，不利的，有害的
eg.Chances of surviving an adverse environment always show appreciatation for those who can adapt better to it.
(9)aerial
a.空中的，从飞机上的
n.天线
eg.He showed me some aerial photographs.
(10)aerospace
n.航空航天技术
eg.The aerospase industry in our country has developed greatly after liberation.
