Modification for synthetic purposes on the Diels - Alder adducts 56 and 62 has only rarely been considered.为了达到合成的目的,对Diels-Alder加 成物(56)和(62)加以改造的问题很少有人考虑.The meanders of a prattling brook, were shaded with straggling w...
The microorganisms involved in symbiosis with the alder tree are actinomycetes of the genus Frankia.而与赤杨共生的微生物是放线菌.Its name is Ben Alder , it is a wild , desert mountain full of hills and hollows.它的名字是本·亚尔德, 是一座尽是些山岗和鸡谷的...
这时车已徐徐的转出大门.The road was jammed with rickshaws at the hospital gate.有的还未厌倦那船一样的徐徐的划行.Some had not yet wearied of their gentle boat - like paddling.天气很温暖而且微风徐徐的.The weather is warm and breezy....
His comments are bound to add fuel to the debate.他的话必将为争论推波助澜。The authorities have urged people to stock up on fuel.当局已经敦促人们储备燃料。The new Metro is designed to run on unleaded fuel.新的地铁系统设计为使用无铅燃料。...