Derrick and I have been laying out the system of irrigating ditches.德里克跟我在一起修建那个灌溉网.The rain has filled up the ditches again.雨水又把沟渠给灌满了.The fields are crisscrossed by irrigation canals and ditches.田野上沟渠纵横.Deep ditches, d...
心悸可能是由于低血糖、咖啡因过量或抽烟过多。The shaking inside may be due to low blood sugar, too much caffeine or too many cigarettes.低血糖症有时是显著的临床表现.Hypoglycemia is sometimes a prominent clinical manifestation.答:在低血糖反映后有两个因素会升血糖.Two factors ...
...the internationally agreed rules of chemical nomenclature.国际公认的化学命名规则It developed variations in nomenclature and in substance.它在名称上和实质上都发生了一些变化.Multiply unsaturated compounds are usually best named by the IUPAC nomenc...