451, permissible a. 可允许的
Is smoking permissible in the theatre?
在剧院里允许吸烟吗?
452, perpetual a.永久的;四季开花的
adj. 永久的; 终身的
He is on a perpetual search for truth.
他毕生在寻求真理。
不断的; 常发生的
That dog is perpetual nuisance.
那只狗是经常惹人讨厌的东西。
453, perplex vt.迷惑,困惑,难住
This problem perplexes me.
这个问题使我迷惑不解。
454, persistent a. 固执的,坚持的,持续.
Albert had a persistent headache that lasted for three days. 艾伯特连续头痛了三天
455, pest n.害虫;害人虫
456, petition n.请愿 vt.向 请愿
请愿书
Everyone signed the petition to the County Council for a new school in our village.
大家在致县委会的请愿书上签了名, 要求在我们村里办一所新学校。
457, petty a.细小的;器量小的
adj. 不重要的
It was a petty problem and they soon solved it.
这仅是一个小问题, 他们很快就解决了。
卑鄙的; 小气的
It was petty of her not to accept the apology.
她气量太小, 连道歉也不接受。
458, physiological a. 生理学的,生理学上的
He bought a physiological book.
他买了一本生理学方面的书。
生理的
The doctor had a test on the physiological reaction of human being.
医生做了一次有关人的生理反应的测试。
459, plague n.瘟疫,鼠疫;天灾
Plague was once very common here.
以前, 瘟疫在这里时有发生。
vt. 使染瘟疫
He has been plaguing me with silly questions.
他老是拿些愚蠢的问题来烦我。
460, plaster n.灰泥;硬膏;熟石膏
He mixed up some plaster to repair the wall.
他和了一些灰泥去补墙。
膏, 药膏
She applied the plaster on his shoulder.
她将膏药贴在他的膀子上。
石膏
vt. 敷贴膏药; 在 上涂灰泥; 粘贴, 使紧贴
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