Many theories purport to explain growth in terms of a single cause.许多理论都标榜以单一的原因解释生长.What's the purport of her letter?她的信的大意是什么?Her letter may purport her forthcoming arrival.她的来信可能意味着她快要到了....
The amide nitrogen of glutamine or asparagine functions more effectively than ammonia.谷酰胺或天门冬酰胺的酰胺氮作用较氨更有效.Trial and error revealed that it was best to put in the amide before the epoxide.尝试和误差法表明,最好在环氧化之前引进酰胺基.A polymer...