Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using gallium sulfate supported on silica gel as the catalyst.以自制的硅胶固载硫酸镓为催化剂,正丁酸和...
...the Dallas Cowboys and Buffalo Bills, the winners and losers of this year's Super Bowl.达拉斯牛仔队和布法罗比尔队，今年超级碗的赢家和输家A cluster of vultures crouched on the carcass of a dead buffalo...一群秃鹫蹲伏在一具野牛的尸体上。The festival comme...
I would not have our gratitude become indiscreet or importunate.我不愿意让我们的感激变成失礼或勉强.He is notoriously indiscreet about his private life...他在私生活方面的不检点是出了名的。We’ve been too indiscreet,to say the least.至少可以说,我们一贯太轻率。Had he bee...
他们将会影响还未出世的好几代英国人。They will affect generations of Britons still unborn.他生在法国，但父母是英国人。He was born in France but his parents are British.报道说,坠毁的飞机上有三名英国人.The report said there were three Britons on the crashed plane....
Things might have been different if I'd talked a bit more.如果当时我再多说一点的话，结果或许会不一样。I get a bit uptight these days. Hormones, I suppose.这些天我有点焦躁。我看是荷尔蒙在作怪。She'd do anything for a bit of pin money.为了挣点外快，她什么都肯做。...