A method of synthesis of butyl isobutyrate catalyzed by amidosulphonic acid has been studied.以氨磺酸为催化剂催化合成了异丁酸丁酯,确定了酯化优化条件.The method about synthesis of approximate straight line motion mechanism based on moving centrode ...

n.渴望，热心，热切...

n.汁( juice的名词复数 )，果汁，胃液，电...

successes的音标：successes的英式发音音标为：[sək'sesɪz]successes的美式发音音标为：[sək'sesɪz]...

detaches的音标：...

pines的音标：...

Aires的音标：...

requires的音标：...

To be honest the house is not quite our style.说实话，这所房子不太适合我们。I want to be honest, honest above everything else.我想要做到诚实，一切以诚实为上。Fraudsters are often shopped by honest friends and neighbours.诈骗犯经常会被正直守法的朋友和邻居告发。...

Activates the window and displays it in its current size and position.激活窗口,保持当前的大小及位置不变.Pulling out the alarm switch activates alarm and pushing it deactivates it.闹钟的开和关是通过拔出和按入闹铃开关实现的.The caller activates the system sof...

surtaxes的音标：...

sequestrate的现在完成时为：sequestrated...

n.女猎人...

Manic depressives oscillate between depression and elation.躁狂抑郁症患者抑郁与躁狂交替发作.I know several manic depressives and none of them would dream of trafficking drugs.我了解几个抑郁型精神病人,但他们做梦也没想到去贩毒.Objective To explore characteristic...

tyrannies的音标：...

evaporates的音标：...

There were two main political groupings pressing for independence.有两大政治团体力主独立。Police have announced they will not be pressing charges.警方已宣布不会提起诉讼。It is one of the most pressing problems facing this country.这是该国面临的最紧迫的问题之...

It was in ancient times that the thought of pedagogical pragmatics began to gestate and form.教学语用学思想是从古代开始孕育和形成的。...

Conclusions: Historically, landmark and report measurements in esophagoscopy hae been measured and standardized the upper incisor.结论: 从上切牙到食道镜检查的界标和所报道的测量方法在以往的研究中已经被测量和标准化....

纵裂甲藻科...

正确性...

restraint的音标：restraint的英式发音音标为：[rɪ'streɪnt]restraint的美式发音音标为：[rɪ'strent]...

eigenvalues的音标：eigenvalues的英式发音音标为：['eɪgənˌvælju:]eigenvalues的美式发音音标为：['eɪgənˌvælju]...

colchicoresin的音标：colchicoresin的英式发音音标为：[kɒltʃɪ'kɔ:ezɪn]colchicoresin的美式发音音标为：[kɒltʃɪ'kɔezɪn]...

Singing among the savage branches, it impale itself upon the longest, sharpest spine.它把自己钉在最尖最长的刺上,在蓁蓁树枝间婉啭啼鸣.Webster's longest lasting legacy is the changes he proposed in spelling.韦伯斯特最深远最持久的影响在于他提出的关于拼写方面的改变....B...

n.麻醉，麻痹...

spices的音标：spices的英式发音音标为：[s'paɪsɪz]spices的美式发音音标为：[s'paɪsɪz]...

It inculcated universal asceticism and social levelling in its crudest form.这种文献倡导普遍的禁欲主义和粗陋的平均主义.At the crudest level, prices provide an incentive for production.从最基本的层次来说, 价格刺激生产.At its crudest, talk of " reciprocity "...

Scientific development meant the growth of numerous professions ancillary to medicine.科技发展意味着许多医学衍生职业的增长。The doctor is respected by his professions.这位医生受到同行的尊敬.Only 20 per cent of jobs in the professions are held by wome...

express的现在完成时为：expressed...