aero-,air-空气的
aerospace
aeroplane/airplane
areial a.空气的,航空的 n.天线 antenna 天线
aerial view鸟瞰图
aerial current气流
aircraft
airline
airport
airmail
areonaut airman pilot
auto-自己,自动的,自然而然的,源于古希腊语antos(自己)
automobile=auto
automatic a.自动的,机械的,无意识的 n.自动机械
an automatic washing machine.
automation 自动化
扩展:
autocide 自杀 cide(kill)
autocracy 独裁 democracy 民主
automomy 自治,自治权,自治区
Vice- 在官职前使用，表示：副，代理，
vice-president
vice-principal
cross- 交叉的
crosswalk
cross eye
cross armed
cross legged
contra 与。。。相反
contract v.收缩，缩小，订（约） n.包工，合同
He was engaged on the contract of 5 years.
contradict v.反驳，同。。矛盾
He contradicted his own statement.
contrary n.相反,反面,对立物 a.相反的,反对的,矛盾的,对比的
His behavior is contrary to moral.
contrast v.使与..相比,对比 n.对照,对比,差异
in contrast with/to 与...成反比,比较起来
水星:Mercury
金星:Venus
地球:the Earth
火星:Mars
木星:Jupiter
土星:Saturn
天王星:Uranus
海王星:Neptune
MING王星:Pluto