The newspaper presses are rolling in Pittsburgh again today.今天，匹兹堡的报纸又开始印刷了。He was writing the book up to the moment the presses rolled.直到付梓的那一刻他才完稿。He presses the rubber stopper firmly down on the vent.他使橡胶塞牢固地塞进盖上的排气孔....
多年来,用的较多的固定剂是动物制品龙涎香 、 香猫香 、 麝香、以及河狸香.For many years the leading fixatives were the animal products ambergris, civet, musk and castoreum.河狸寻找造窝的场所时是很挑剔的.A beaver looking for a building site is very choosy.其他一些因素也有助于河狸的活跃...
Hit ketone to still do not come how should menstruation do?打了黄体酮还不来月经该怎么办?In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - d...
她一点儿都没表现出同龄人那种自恋和虚无主义的性格倾向。She exhibited none of the narcissistic and nihilistic tendencies of her peers.被自恋症折磨的人会变得只专注于自己的事情，或者不断地自我炫耀。Those who suffer from narcissism become self-absorbed or chronic show-offs.弗洛伊德在他的论文...