除草剪刀；专门用于修剪缝隙角落里的青草。Grass shears are specially made to trim grass growing in awkward places.他们把他的除草机全都推到外面丢掉了。They trundled his mowers outside and dumped them.她教我除草。She taught me to do the weeding....
他们验明6种植物有可能提炼出药物麻醉剂。They identified six plants as having potential for development into pharmaceutical drugs.这种矿石验明含银量很高.The ore assays high in silver.这个死去的士兵仅仅是靠他的制服和个人财务而被验明身份的.The dead solider was identified only by h...
在一定条件下，电子可以作波状运动，而不是粒子状运动。Under certain conditions, electrons can behave like waves rather than particles.原子核由中子 、 质子和其他粒子构成.The nucleus of an atom consists of neutrons, protons and other particles.物质微小的粒子中束缚着惊人的力.Tremen...