二二双杀 Double Play
十二双酸铵 Ammonium dodecanedioate
二双氢链霉素 dihydrostreptomycin
第二双尖牙 Second Pre-Molar ; second bicuspid
二双糖 disaccharide ; disaccharose
十二双酸 Dodecanedioic acid
二甲双胍 Metformin ; MET ; dimethyldiguanide ; Glucophage
十二双手 Do Ankhen Barah Haath
双环戊二烯 dicyclopentadiene ; DCPD ; dicyclopentad ; exo-DCPD
二双核苷酸 dinucleotide
所以你又在电脑上忙碌一阵之后，第二双鞋产生了。
So after another fiddle on the computer you print a second pair.
这已经是彼得在两个星期内所丢掉的第二件夹克和第二双鞋了！
It was the second little jacket and pair of shoes that Peter had lost in a fortnight.
下牙弓变化中，第二双尖牙间和磨牙间宽度增加有显著性差异。
In addition, the changes of width between second bicuspid and mandibular molars showed statistical significances.
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