The developments of manufacturing technology and research on ethylidene norbornene abroad were reviewed with 71 references.介绍了国外亚乙基降冰片烯的生产技术和科研工作的进展情况....
火车站上有冲鼻的猫味和臭水沟味。The railway station smelt powerfully of cats and drains.自行车翻倒在一条小水沟里。The bicycle lay upended in a ditch.盲人领瞎子, 两人都会掉进水沟里.If the blind leads the blind, both will fall into ditch....
the curative properties of herbs药草治病的功效Too much is spent on expensive curative medicine and too little on preventive medicine.在昂贵的治疗性药物上花费太多，在预防性药物上的支出则太少。It was found out that certain herbal medicines had curative effec...