White supremacists devise new Methods: To disenfranchise Negroes.白人至上论者想出新的方法以剥夺黑人的公民权.White supremacists devise new methods to disenfranchise Negroes.白人至上论者想出新的方法以剥夺黑人的公民权。...
No creditable macrofossil record of the Fagaceae exists in the Cretaceous equivocal and require further study.白垩纪尚无壳斗科可靠的大化石记录,微化石需要进一步研究才能确定亲缘关系以及古新世壳斗科已经分化出两个类群....
He followed her up a rickety staircase to a squalid bedsit.他跟着她上了一段摇摇晃晃的楼梯，来到了一间邋遢的卧室起居室两用房间。Mona climbed the rickety wooden stairway.莫娜爬上了摇摇晃晃的木楼梯。He was precautious in crossing the rickety bridge.走过这座摇摇晃晃的桥时他小心翼翼....