它为制取1.6-二羰基产物开辟了广阔天地.This opens up a wide field of 1.6 - dicarbonyl products.这些部位包括羧基 、 羰基 、 环氧基和氨基等.These sites include, carboxyl, epoxy, amino and the like.对羰基的加成作用是有机化学中最重要的反应之一.Addition to carbonyls is one of the mos...
The maple leaves had fallen and they lined the gutters of the asphalted streets.枫树已经落叶,铺满了柏油路两旁的阴沟.He installed rain gutters and downspouts.他安装了雨水檐沟和排水管。The gutters either side of the paved high road were gurgling and ev...
布兰温忙着干活, 心情宛如浸湿的土地一样十分沉重.Brangwen went about at his work, heavy , his heart heavy as the sodden earth.他又从口袋里掏出这封皱巴巴的, 汗水浸湿的信.He still took out the Jacka's letter, misshapen from pockets and soggy with sweat.默默地他们跟我进...