B 开头单词

by reference 通过引用

by rectum [医药科学]直肠灌注

by reason that adv. 因为

by reason of 由于；因为

by reading the textbook 通过阅读教科书 通过阅读课本

by rail over frontier [经济学]经铁路运到边界交货

by rail 由铁路，乘火车

by radio 用无线电

by public tender [法学]通过公开招标

by projection [交通运输工程]依照平面海图的航法

by profession 在职业上；就职业来说

by product workshop [经济学]副产品车间

by product sales [经济学]副产品销售

by product precipitation [物理学]副产品沉淀

by product power [能源科学技术]副产品电力

by product n.副产品；副作用

by priority 按优先级

by pressed for 缺少，缺乏

by preference 首先 最好

by practice 通过实践