by reference 通過引用by rectum [醫(yī)藥科學]直腸灌注by reason that adv. 因為by reason of 由于；因為by reading the textbook 通過閱讀教科書 通過閱讀課本by rail over frontier [經(jīng)濟學]經(jīng)鐵路運到邊界交貨by rail 由鐵路，乘火車by radio 用無線電by public tender [法學]通過公開招標by projection [交通運輸工程]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)濟學]副產(chǎn)品車間by product sales [經(jīng)濟學]副產(chǎn)品銷售by product precipitation [物理學]副產(chǎn)品沉淀by product power [能源科學技術(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 通過實踐