单词	呼吸爲難
释义	同ASTHMA
随便看	backward roll backward-rotating field backward-rotating wave backward rule backward running torque converter backwards backwards and forwards backward scan technique backward scatter backward scatterance backward scattering backward scatter propagation backward scheduling backwards compatibility backwards compatible backward search backward-search algorithm backward search for beginning of program backward search for block[sequence]number backward search for block（sequence）number backward search for particular data backward search for program alignment function backward season backward selection model backward sequence