Last year 400,000 acres of land yielded a crop worth $1.75 billion.去年40万英亩的土地产值达17.5亿美元。It yielded a profit of at least $36 million.它带来了至少3,600万美元的收益。His trip to Melbourne had yielded a lot of information.他的墨尔本之行让他大开眼界。...
Both the R groups are alkoxy residues.两个R基团都是烷氧基.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....