obvious obviate obviation viaduct previous pervious

obvious ['ɔbviəs]
~ (to sb) (that ...) easy to see or understand
(disapproving) not interesting, new or imaginative; unnecessary because it is clear to everyone
adj. 明显的；显著的；乏味的；无创意的;平淡无奇的

例句
An obvious improvement in his health has happened after the operation.
手术后，他的身体状况有了很大改观

麻省理工公开课 - 计算机科学及编程导论课程节选
And it seems pretty obvious that at least two of the things I'm going to want are stock and market.
很明显,我至少要有的两个类是,股票和市场。

obviate ['ɔbvieit] go against;move against
(formal) to remove a problem or the need for sth
vt. 排除；避免；消除

例句
He destroyed the letter to obviate any suspicion that might fall on him.
他销毁了那封信,以免给他招来任何怀疑。

obviation [,ɔbvi'eiʃən]
n. 消除；回避；避免

viaduct ['vaiədʌkt] educate
a long elevated roadway usually consisting of a series of short spans supported on arches, piers, or columns
n. 高架桥；高架铁路

previous ['pri:vjəs]
happening or existing before the event or object that you are talking about:
immediately before the time you are talking about
adj. 以前的；早先的；过早的
adv. 在先；在…以前

短语:
previous to 在…以前；在…之前

耶鲁公开课 - 古希腊历史简介课程节选
A kind of a pin used to hold your cloak together, called a fibula, unknown in the previous period.
一种别住披风的别针,称之为扣针,这在之前的时期从未出现过

pervious ['pə:viəs] pierce刺穿；穿过per
Open to passage or entrance; permeable
Open to arguments, ideas, or change; approachable
adj. 能被通过的；能接受的；可渗透的

例句
I'm afraid he's not pervious to our proposal.
恐怕他不会接受我们的建议。

趣味单词

morbid['mɔ:bid] 毛病的
having or expressing a strong interest in sad or unpleasant things, especially disease or death
(medical) connected with disease
adj. 病态的；由病引起的；恐怖的；病变部位的

morbidity [mɔ:'bidəti]
n. 发病率；病态；不健全

哈佛公开课 - 计算机科学课程节选
For weeks I've been investigating the murders with a certain morbid fascination.
几个星期以来,我一直在研究变态杀人。