biserrate具: utensil; tool; implement二: two锯齿: sawtooth; serration的: 4次方是 The fourth power of 2 i ...具二齿的: bidentate下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:具二锯齿的,即可在微信中查询翻译