The crude, wet benzoate ( 118 grams ) was disslolved with reflux in 1,400 ml methanol.将粗制 、 湿的苯甲酸酯 ( 118克 ) 回流着溶于140毫升甲醇中.Unimmunized contacts, especially infants, should receive 2 to 4 ml. of hyperimmue gamma globulin i...
I had to pay nigh on forty pounds for it.我不得不为它花了将近40英镑。The storm must still be nigh, she thought.她想暴风雨必定仍会到来。They've lived in that house for nigh on 30 years.他们在那所房子里住了差不多30年了。...
最典型的例子是梅西百货，它曾经是加利福尼亚无可争辩的零售巨头。The prime example is Macy's, once the undisputed king of California retailers.20世纪80年代，一些出版巨头开始吞并一些较小的公司。During the 1980s monster publishing houses started to swallow up smaller compan...
Carbon dioxide is the largest contributor to the greenhouse effect.二氧化碳太多是道致温室效应的最主要原因.He is a generous contributor.他是位慷慨的捐助者.He is a regular contributor to children's magazines.他经常为儿童刊物写稿....
为保持土壤肥力,农民搞作物轮作.Farmers rotate their crops so that the soil will remain fertile.农作物轮作有助于防止水土流失.Crop rotation helps prevent soil erosion.他连续5年在同一块地里种植不同的作物，研究人员称之为轮作。He grew a different crop on the same field five years i...
另外, 提出了亮度步长的方法来检测阴影中的半影.In additional, the luminance step is applied to detect the penumbra.通过甲苯胺蓝染色、焦油紫染色并利用图像分析仪测量半影区面积.The area of the penumbra was measured and analyzed with an image analysis system....