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 harshness of the climate makes vegetative growth extremely slow.恶劣的气候使植物生长特别缓慢。She had been in what doctors described as an irreversible vegetative state for five years.她处于医生所说的不可逆性植物人状态已经5年了。The autonomic nervous sy...
I'm having a rollicking good time.我正过得开心快活着呢."The boss gave us a rollicking," said McGoldrick.“老板狠狠教训了我们一顿，”麦戈德里克说。He gave us both a rollicking.他把我们俩训斥了一通。...