单词	stiff as a board
释义	请查阅词条：stiff
随便看	porchmouth digital radio digital radios digital rights digital rights management digital root digital signature digital subscriber loop digital television digital televisions digital-to-analog digital-to-analog converter digital-to-analogue digital-to-analogue converter digital tuner digital tuning digital TV digital TVs digital video disc digital video disk digital video recorder digital watch digital watermark digital watermarking digitary 鸑鷟鸕鸘鸚鸛鸜鸜鵒鸝鸞鸟 Isolationsstoff Isolationsstärke Isolationsstörung Isolationstechnik Isolationsverlust Isolationsvermögen Isolationswiderstand Isolationswiderstand Isolationswiderstandsmessung Isolationsüberwachung