玫瑰很适于接枝在石南根上.Roses graft well on brier roots.化学改性主要有氧化 、 交联 、 酯化和接枝共聚.Chemical modification including oxygenation, esterify, graft copolymerization and so on.以过氧化二苯甲酰为引发剂,使 丙烯 睛在涤沦(PET ) 纤维上接枝共聚.PET fibres were grafted a...
避蚊胺和其他能驱赶昆虫的化学药品也能阻止蚊子的叮咬.DEET and other chemicals that against insects can keep mosquitoes from biting.驱蚊剂含有避蚊胺节制地暴露皮肤时,你是在户外.Apply insect repellent containing DEET sparingly to exposed skin whenever you are outdoors.你应...
Allow me to introduce you to our headmaster.请允许我介绍你见见我们的校长。The headmaster elaborated upon the idea for a new school uniform.校长就制作新校服的想法作了说明.I asked my headmaster if he could arrange a collection for a refugee charity.我问校...