With lasers scientists can probe many physical processes, such as combustion, once beyond our ken.视野
A、understandingA
暂无解析
AlthoughtheCarbon14methodofdatingoldobjectsisnotfoolproof,itisthebestmethodavailableatpresent
ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.
EllaGrasso,electedgovernorofConnecticutin1974,supportedtheenactment(given,granted)ofafreedom-of-informationlaw.
Somecosmeticsmanufacturersattempttocapturetherose'sunmistakablefragrance香味insoapsandperfumes.
InthenortheasternUnitedStates,itrainsintermittently间歇地throughoutthespring.
