perfect [ per- = thoroughly 徹底；feet = to make or do 做=>“made or done thoroughly 做得徹底完全” →]I a. having no faults; without defect 盡善盡美；完整無誤 / Perfect work shows great care. 工欲盡善，心必專一。II v. make perfect; improve 使完善；改善 / The poet is perfecting his poems. 詩人正在錘煉他的詩句。

perfection n. 盡善盡善；圓滿成熟 

perfectible a. 可完成的；可改善的

perform [ per-=thoroughly 徹底地；form=to finish 做好 v. fulfil; carry out履行，完成 /One should perform what he Has promised. —個人應(yīng)履行自己的諾言。

performance n. 履行，完成；功績；演出 

performable a. 可執(zhí)行的；可完成的

permanent [per-=through 經(jīng)過；man = to stay 停留；-ent = -ing“staying through a long time 長期保留著的”→] a. lasting; intended to last 永久的；持久的 / After doing odd jobs for a week, he got a permanent position in the store.干了一周的雜工后，他在那家商店得到一份固定的工作。

permanency n. 永久的事物；永久的職位

permit [ per- = through 通過；mit = to send 發(fā)送=>“to send sb. through 讓某人通過”→]v. allow (sb. ) to do sth. ; give leave to 允許；許可 / Most parents will not permit their young children to stay up late.多數(shù)父母不讓小孩子晚上睡覺很晚。

permission n. 允許，許可，同意 

permissive a. 容許的，許可的；隨意的

persist [ per- = thoroughly 徹底地；sist = to stand =>“to stand thoroughly 始終站穩(wěn)”→]v. stick to it; continue firmly 堅持；固執(zhí) / She persisted in reading newspaper at the dinner table. 她總是在吃飯時看報紙。

persistence n. 堅持，固執(zhí)；持續(xù)，存留 

persistent a. 堅持的，固執(zhí)的；持續(xù)的