The baby has just learned to toddle.小孩子刚会走道儿.If not for John, Brian wouldn'thave learned the truth.要不是因为约翰,布赖恩也不可能知道真相。What we now know about the disease was learned by careful study of diseased organs.我们目前对该疾病的认识是通...
六亚甲基二异氰酸酯 ( HMDI ) 可用在预聚物中代替甲苯二异氰酸酯〔TDI〕.Hexamethylene diisocyanate ( HMDI ) may be used in prepolymer, in place of TDI.柯达叙述了一种直链的活性亚甲基两当量的黄成色剂.Kodak company describes open chain reactive methylene two - equivalent yello...
斯科特和阿蒙森都迫不及待地等待着春天曙光的来临.Scott and Amundsen waited anxiously for spring.每逢入秋,一年当中观测假曙光的最佳时节来临了.假曙光即是我们所知的黄道光.Autumn is the best time of year the false dawn also known as the zodiacal light....