keystone的复数形式怎么写？

Advancing suburban assurance is the difficulty and keystone of domestic insurance enterprise.发展农村保险是我国保险业发展的难点和重点.Quantitative measurements of one sort or another serve as the keystone of engineering practice.定量测定一种或多种成分...

n.重点，要旨，基本原理，拱心石...

Quantitative measurements of one sort or another serve as the keystone of engineering practice.定量测定一种或多种成分是环境工程中的重要项目.The keystone to any marriage is one word: " WE ".任何婚姻的基石只有两个字: “ 我们 ”.Advancing suburban assurance is ...

keystone的音标：keystone的英式发音音标为：['ki:stəʊn]keystone的美式发音音标为：['kistoʊn]...

juryman的音标：juryman的英式发音音标为：['dʒʊərimən]juryman的美式发音音标为：['dʒʊrimən]...

Perot hoped to run another series of campaign infomercials.佩罗期待着新一轮的竞选宣传节目的播出。The barb stung her exactly the way he hoped it would.如他所愿，这句带刺的话刺痛了她。A hard-core group of right-wing senators had hoped to sway their colleagu...

此例有骨的局灶性病灶,接近受累淋巴结.This is an example of focal bone disease near involved lymph nodes....

你认为我需要换新的减震器吗？Do you think I need new shocks?最近以来, 我认为后减震器有些软, 想调整一下.Recently, I think after some soft shock absorber, you want to adjust.从曲轴端拆下减震器螺栓和垫圈.Remove vibration damper bolt and washer from end of crankshaft....

“强壮”的反义词：虚弱, 弱小, 软弱, 衰弱, 瘦弱, 衰老, 单薄, 羸弱, 孱弱, 纤弱。...

飞标: 弯曲形投掷尖刺武器.澳大利亚原住民多在狩猎及战争中使用之.Boomerang: Curved throwing stick used chiefly by the aborigines of Australia for hunting and warfare....

“无产者”的英语可以翻译为：proletarian ...

她穿的那件粗花呢夹克已经很旧了。The tweed jacket she wore had seen better days.他身穿一套粗花呢西服，看上去像是量身定做的。He was wearing a tweed suit that looked tailor-made.粗花呢从不过时，手感很好，结实耐磨。Tweed is timeless, tactile and tough....

[体]得分者...

Some people were hurrying, as if anxious to get ahead of others.有一些人匆匆忙忙, 似乎急于超过别人.She is hurrying for the conference.她匆忙赶去开会.He was hurrying along the pavement.他在人行道上疾行。You are better eating just a small snack than hurr...

mammatus的音标：mammatus的英式发音音标为：[mæ'meɪtəs]mammatus的美式发音音标为：[mæ'meɪtəs]...

bang的现在完成时为：banged...

There are three kinds of mood in English: the indicative mood, the imperative mood and the subjunctive mood.在英语中有3种语气: 陈述语气, 祈使语气和虚拟语气.This insures that the reported below are indicative of real - world performance.这确保下述...

edit的一般过去时为：edited...

chemicla的音标：chemicla的英式发音音标为：['kemɪklə]chemicla的美式发音音标为：['kemɪklə]...