Both the R groups are alkoxy residues.两个R基团都是烷氧基.R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基....
The freighter fouled its propeller in fishing nets.货船的螺旋桨被渔网缠住了。The freighter steered out of Santiago Bay that evening.那天晚上货轮驶出了圣地亚哥湾.The freighter was launched into water with a great splash.货船入水时溅起巨大的水花....
他恭顺地看着基思，等着他发号施令。He was looking obediently at Keith, waiting for orders.彼得对突如其来的有关基思的问题应答自如，令人叹服。Peter had dealt admirably with the sudden questions about Keith.警员基思·盖特协助逮捕了那些人。PC Keith Gate helped arrest the men....
Mum wasn't very domesticated.妈妈不是很喜欢干家务活。He is thoroughly domesticated and cooks a delicious chicken casserole.他精于家务,烹制的砂锅炖小鸡非常可口.Cows were domesticated to provide us with milk.人们饲养奶牛来为我们提供牛奶....