R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.The results show that zinc acetate - stearic acyloxy has thermal stability and synerg...
So many slanders are written every day in the daily press against Negroes and Puerto Ricans.因为在每天的新闻报导中都有反对黑人和波多黎各人的.Except for what he spent on haircuts,books and daily necessities he never wasted a penny.除了理发、买书和必要的日用品...
When things go wrong, all of us naturally feel disappointed and frustrated.出问题时，我们大家自然都感到失望和沮丧。This is where a lot of parents go wrong.这正是很多父母犯错的地方。Nearly everything that could go wrong has gone wrong.差不多可能出乱子的地方都出了乱子。...
他有点天真地解释了这一罪行可能是如何实施的。Somewhat ingenuously, he explains how the crime may be accomplished.我天真地以为这是份朝九晚五的工作。I thought, naively, that this would be a nine-to-five job.我与克丽茜对视了一眼，但她只是一脸天真地对我微笑。I caught Chrissie's eye, ...
American capitalists had invested $ 867,200,000 in Canadian mines, industries, and railroads.美国资本家投在加拿大的矿业 、 工业和铁路方面的资本为八亿六千七百二十万美元.Clerk : Well , Canadian Gifts is on the lower level. It's across from Prime Time Vi...
Some of these composers were Beethoven, Schumann, Chopin, Mendelssohn, Wagner and Tchaikovsky.有些作曲家是贝多芬, 舒曼, 肖邦, 门德尔松, 瓦格纳和柴可夫斯基.The duality of classicism and romanticism - a peculiarity of Mendelssohn's piano music...