I feel much more reassured when I've been for a health check.体检之后我感到放心多了。His gentle manner and honeyed tones reassured Andrew.他温和的态度和悦耳的语调使安德鲁消除了疑虑。Hannah's natural manner reassured her, and she relaxed.汉娜轻松自然的...
他接受了剑桥大学的研究员一职。He has accepted a research professorship at Cambridge University.他选择到这家公司做了市场研究员。He chose to join the company as a market researcher.她曾经是化学研究员。She worked as a research chemist....
正戊醛是合成香料双氢茉莉酮酸甲酯的重要原料.N - amyl aldehyde is a main raw material in the synthesis of methyl dihydrojasmonate fragrance.2-戊基环戊烯酮再与丙二酸二甲酯缩合,脱羧得到二氢茉莉酮酸甲酯.Methyl dihydrojasmonate was synthesized from 2 pentyl 2 cyclopentanone ...