by a head 一頭之差 相距極近by a hair 差一點(diǎn)兒by a computer virus [計(jì)算機(jī)科學(xué)技術(shù)]由計(jì)算機(jī)病毒by a chance 通過(guò)一次機(jī)會(huì)by -catch by - pass by (the) millions by (prep., adv.) by prep. 由，被；通過(guò)；相差……；到……之前；在……旁邊 adv. 經(jīng)過(guò)；（時(shí)間）過(guò)去；在旁邊；短暫訪問(wèn) n. （體育比賽）輪空晉級(jí) adj. 旁邊的，側(cè)面的bxm broadband switching module [計(jì)算機(jī)科學(xué)技術(shù)]寬帶轉(zhuǎn)接模塊bxdbis-ethylxanthogen disulfide [材料科學(xué)]二硫化雙乙基黃原酸酯bxd bx 布朗克斯（Bronx）bwu bwr abbr. 沸水型反應(yīng)堆（Boiling Water Reac-to）bwp bwfc bwb bwana devil bwana n.主人；老板；先生