二二双杀 Double Play
第二双尖牙 Second Pre-Molar
二甲双胍 Metformin ; MET ; Glucophage
十二双手 Do Ankhen Barah Haath
双环戊二烯 dicyclopentadiene ; DCPD
盐酸二甲双胍 Metformin HCL ; metformin hydrochloride ; Dimethylbiguanide hydrochloride ; Metformin Hydrochloride Tablets
二双子 Nisoshi
二带双锯鱼 Amphiprion bicinctus ; Amphiprion bicinctus Ruppell
双二极管 [电子] double diode ; duodiode ; [电子] twin diode ; duplex diode
亚甲基二双膦酸钠 Methylene Diphosphonate ; MDP
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.
汤姆开始用前座制成第二双雪鞋，然后用橡皮筋把两双鞋紧紧绑在两人的腿上。
Tom cut up the front seats for the second pair of snowshoes and fastened both sets to their feet with bungee cords.
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