断线率是影响IP电话质量的主要原因。
错误
暂无解析
英语翻译：thescienceofbioticcontrol
英语翻译：北洋军阀政府
When_______,waterwillbeturnedintosteam.
“Thedignityofmovementofanicebergisduetoonlyone-eighthofitbeingabovewater.”This“iceberg”analogyaboutprosestylewasputforwardby().
Moderneconomics________thecountry’sagriculturalpolicies.