the many isotopes of carbon碳的诸多同位素Tritium is one of the mildest radioactive isotopes.氚是最和缓的放射性同位素之一.The inferno spewed a deadly plume of radioactive isotopes into the atmosphere.这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层....
Men fantasise as a substitute for acting out forbidden desires.人类通过幻想宣泄压抑的欲望。His senses and reasons inhibited his wrong desires or impulses.他的理智抑制了不正当的欲望或冲动.She desires that you ( should ) see her at once.她要你立即见她....