Six demonstrators were arrested and taken to the police station.6个旅行者被捕并被带到警察分局.The demonstrators were bound over to keep the peace.示威者一定要遵纪守法。The demonstrators were borne back by the police.示威者被警察驱赶回去了。The demonstrators...
There are several other excretory mechanisms in earthworms.蚯蚓有好几种排泄机制.Describe the excretory system of the genus Nereis briefly.简述沙蚕属的排泄系统.an excretory organ of certain invertebrates.某些无脊椎动物的排泄器官In the earthworm and many...