B 開頭單詞

by reference 通過引用

by rectum [醫(yī)藥科學(xué)]直腸灌注

by reason that adv. 因?yàn)?/p>

by reason of 由于；因?yàn)?/p>

by reading the textbook 通過閱讀教科書 通過閱讀課本

by rail over frontier [經(jīng)濟(jì)學(xué)]經(jīng)鐵路運(yùn)到邊界交貨

by rail 由鐵路，乘火車

by radio 用無線電

by public tender [法學(xué)]通過公開招標(biāo)

by projection [交通運(yùn)輸工程]依照平面海圖的航法

by profession 在職業(yè)上；就職業(yè)來說

by product workshop [經(jīng)濟(jì)學(xué)]副產(chǎn)品車間

by product sales [經(jīng)濟(jì)學(xué)]副產(chǎn)品銷售

by product precipitation [物理學(xué)]副產(chǎn)品沉淀

by product power [能源科學(xué)技術(shù)]副產(chǎn)品電力

by product n.副產(chǎn)品；副作用

by priority 按優(yōu)先級

by pressed for 缺少，缺乏

by preference 首先 最好

by practice 通過實(shí)踐