I've got a toothache.我牙疼。I have got toothache, so I must go to a dentist.我牙疼, 必须去看牙医.A toothache racked my jaw.牙疼使我的下巴难受极了....

Most laboratory Methods: Use some type of electromechanical transducers.多数实验方法都使用某种机电换能器.This setup consists of a butterfly valve and a rotary electromechanical actuator.这套装置由蝶阀和旋转电动驱动器组成.Investigates the matching calcul...

The price must be legible to a purchaser.价格要写得清楚些,让买家一眼能辨认出.Every purchaser of a pound of coffee received a box of cookies as a bonus.每买一磅咖啡的人都得到一盒免费奉送的饼干.The territory was too expensive for any purchaser, so the two cou...

chivalric的音标：chivalric的英式发音音标为：['ʃɪvəlrɪk]chivalric的美式发音音标为：['ʃɪvəlrɪk]...

v.（使）疼痛，变粗糙，皲裂( chap的现在分词 )...

choana的音标：choana的英式发音音标为：['kəʊənə]choana的美式发音音标为：['koʊrnə]...

cheep的音标：cheep的英式发音音标为：[tʃi:p]cheep的美式发音音标为：[tʃip]...

blenches的音标：...

dichlorvos的音标：dichlorvos的英式发音音标为：[daɪ'klɔ:vɒs]dichlorvos的美式发音音标为：[daɪ'kloʊrdaɪ'klɔˌvoʊs]...

氯甲酸氯甲酯...

鳞绿泥石...

42 As the touchstone tries gold, so gold tries man.42试金石试金, 黄金试人.A man’s deed is the touchstone of his greatness or littleness.行动是一个人伟大或者渺小的试金石。Job security has become the touchstone of a good job for many employees.工作稳定...

n.糖脊髓液...

choice（上等的，精选的）的最高级形式...

forehatch的音标：forehatch的英式发音音标为：['fɔ:hætʃ]forehatch的美式发音音标为：['fɔhætʃ]...

chapels的音标：...

n.火柴，比赛，竞赛，匹配v.相配，相称，相比...

She could hear the tinny strains of a chamber orchestra.她能听见室内管弦乐队尖细的旋律。Her instructor plugged live bullets into the gun's chamber.她的教练在枪膛里装上了实弹。The members left the council chamber.议员离开了会议厅。...

离瓣花亚纲...

torching的音标：torching的英式发音音标为：['tɔ:tʃɪŋ]torching的美式发音音标为：['tɔtʃɪŋ]...

n.蛹，茧，任何在形成中而尚未至完全成熟阶段的事物( chrysalis的名词复数 )...

character的现在进行时为：charactering...

They walked in a crouch, each bent over close to the ground.他们每个人都俯身贴近地面蹲伏着前进。The fielders crouch around the batsman's wicket.防守队员蹲伏在击球手守卫的三柱门周围。Playing Rooney and Owen means no place for Crouch.让鲁尼和欧文上场就意味着克劳奇要坐板凳....

Friedrich von Hayek is the most eloquent expositor of the market as a process of discovery.弗雷德里希?冯?哈耶克(FriedrichvonHayek)是市场作为发现过程的最雄辩阐述者.Really? Who told you that, Friedrich?真的? 弗雷德里克,谁说的?In this sense, the words of Fri...

chart的音标：chart的英式发音音标为：[tʃɑ:t]chart的美式发音音标为：[tʃɑrt]...

vt.& vi.孵化，孵出，破壳而出vt.秘密策划，（尤指）密谋，使（小鸟、小鱼、小虫等）孵出n.（船甲板或飞机底部装货物的）舱口，开口，（飞机或宇宙飞船的）舱门，（尤指厨房和餐厅之间供传递食物的）两室之间的小窗口...

breach的音标：breach的英式发音音标为：[bri:tʃ]breach的美式发音音标为：[britʃ]...

antechall的音标：antechall的英式发音音标为：[æntɪt'ʃɔ:l]antechall的美式发音音标为：[æntɪt'ʃɔl]...

n.首领的地位，首领的权威...

porch的近义词/同义词有：portico, deck, galilee, stop, gallery, steps, solarium, vestibule, loggia, veranda, stoop, balcony。n.porch的近义词（门廊,走廊;日光浴室）：portico, deck, galilee, stop, gallery, steps, solarium, vestibule, loggia, veranda...