在催化剂存在下,用双氧水氧化乙二醛溶液快速合成了乙醛酸.Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.利用报废的液体推进剂硝酸-27S和乙醛制备乙二醛.Glyoxal is prepared with waste liquid propellant HNO 3 - 27 S and ethanal.乙二醛 、 乙...
The ship which carried them was called the Mayflower.他们乘坐的船是“五月花”号.Excuse me. Do i go straight for the mayflower hotel?对不起. 去五月花旅馆是一直往前走 吗 ?There is a liner Mayflower out of New York at 7:15 a.m.五月花号轮早上7:15从纽约启航....
Thorpe could only stand and gawp.索普只是站着傻看。Thorpe next set out to determine exactly when the chaffinch learns to sing.接着,索普就开始研究苍头燕雀是在什么时候学唱歌的.After this heartbreaking experience,Thorpe turned to professional sports.在这次令人...
英语 、 荷兰语、德语是同语族的语言.English, Dutch and German are cognate languages.这些语言都是属于拉丁语族的.These languages belong to the Latin family.来自斯拉夫语族的语言中的还有robot(机器人), 它原是个捷克词语.Also from the Slavonic family of languages comes " robot " , ...
Her eyes were bedimmed with tears.泪水模糊了她的视线.With her eyes bedimmed with tears, Mary stumbled along in the darkness.玛莉泪眼蒙胧, 在黑暗中蹒跚而行.The living room is bedimmed by the towering trees outside.室外高耸的树木,于客厅显得昏暗....
当琴弓在小提琴的弦上拉过时, 就能听到优美的音乐.When a bow is drawn across the strings of a violin, music is heard.我小提琴上的琴弓旋钮坏了.The nut on my violin is broken.他让琴弓发出拨弦音.He twanged his bow....
我们的炮弹一发，便听到可怕的哀号声和尖叫声。Our artillery opened up and we heard a fearful wailing and screeching.她听到警报器发出可怕的尖叫声。She heard the sirens scream their unearthly wail.喊叫声变成了惊恐的尖叫声。The shouts changed to screams of terror....